ICU-5738 ported performance tests for icu4jni charset apis into icu4j
X-SVN-Rev: 21671
This commit is contained in:
Andrew J Macheret
parent
6e82eae95b
commit
f69a374304
@ -0,0 +1,322 @@
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package com.ibm.icu.dev.test.perf;
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import java.io.*;
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import sun.io.*;
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//import com.ibm.icu.converters.*;
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import com.ibm.icu.charset.*;
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import java.nio.charset.*;
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import java.nio.*;
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/**
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* Copyright (c) 2002-2005, International Business Machines Corporation
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* and others. All rights reserved.
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*
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* @author ram
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*/
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public class ConverterPerformanceTest extends PerfTest {
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public static void main(String[] args) throws Exception {
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new ConverterPerformanceTest().run(args);
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}
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String fileName=null;
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String srcEncoding=null;
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String testEncoderName=null;
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char unicodeBuffer[] = null;
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byte encBuffer[] = null;
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protected void setup(String[] args) {
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try{
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// We only take 3 arguments file name and encoding,
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if (args.length < 6 ) {
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System.err.println("args.length = " + args.length);
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for (int i=0; i<args.length; i++)
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System.err.println(" : " + args[i]);
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throw new RuntimeException("Please supply file_name <name> src_encoding <enc> test <converter name>");
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}
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for(int i=0; i<args.length; i++){
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if(args[i].equals("file_name")){
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fileName = args[++i];
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}
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if(args[i].equals("src_encoding")){
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srcEncoding = args[++i];
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}
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if(args[i].equals("test")){
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testEncoderName = args[++i];
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}
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}
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FileInputStream in = new FileInputStream(fileName);
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InputStreamReader reader = new InputStreamReader(in,srcEncoding);
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unicodeBuffer = readToEOS(reader);
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//encBuffer = new String(unicodeBuffer).getBytes(testEncoderName);
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// TODO: should use built in nio converters (this is just for setup, not for the actual performance test)
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CharToByteConverter cbConv = CharToByteConverter.getConverter(testEncoderName);
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cbConv.setSubstitutionMode(false);
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encBuffer = cbConv.convertAll(unicodeBuffer);
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestFromUnicodeStream() {
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return new PerfTest.Function() {
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public void call() {
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try{
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ByteArrayOutputStream out = new ByteArrayOutputStream(unicodeBuffer.length * 10);
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OutputStreamWriter writer = new OutputStreamWriter(out, testEncoderName);
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writer.write(unicodeBuffer, 0, unicodeBuffer.length);
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writer.flush();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return unicodeBuffer.length;
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}
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};
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}
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PerfTest.Function TestToUnicodeStream() {
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return new PerfTest.Function() {
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char[] dst = new char[encBuffer.length];
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int numOut =0;
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public void call() {
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try{
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ByteArrayInputStream is = new ByteArrayInputStream(encBuffer, 0, encBuffer.length);
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InputStreamReader reader = new InputStreamReader(is, testEncoderName);
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numOut = reader.read(dst, 0, dst.length);
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reader.close();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return encBuffer.length;
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}
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};
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}
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/*
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PerfTest.Function TestByteToCharConverter() { // decoder charset.forname().newencoder().decode
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try{
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return new PerfTest.Function() {
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char[] dst = new char[encBuffer.length];
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int numOut =0;
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ByteToCharConverter conv = ByteToCharConverter.getConverter(testEncoderName);
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int num =0;
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public void call() {
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try{
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numOut= conv.convert(encBuffer, 0, encBuffer.length, dst, 0,dst.length);
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conv.reset();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return encBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestCharToByteConverter() { // encoder charset.forname().newencoder().encode
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try{
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return new PerfTest.Function() {
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byte[] dst = new byte[encBuffer.length];
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int numOut =0;
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CharToByteConverter conv = CharToByteConverter.getConverter(testEncoderName);
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int num =0;
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public void call() {
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try{
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numOut= conv.convert(unicodeBuffer, 0,unicodeBuffer.length,dst,0, dst.length);
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conv.reset();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return unicodeBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestByteToCharConverterICU() { // decoder charsetprovidericu.getdecoder
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try{
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return new PerfTest.Function() {
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char[] dst = new char[encBuffer.length];
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int numOut =0;
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ByteToCharConverter conv = ByteToCharConverterICU.createConverter(testEncoderName);
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int num =0;
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public void call() {
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try{
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numOut= conv.convert(encBuffer, 0, encBuffer.length, dst, 0,dst.length);
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conv.reset();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return encBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestCharToByteConverterICU() {
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try{
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return new PerfTest.Function() {
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byte[] dst = new byte[encBuffer.length*2];
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int numOut =0;
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CharToByteConverter conv = CharToByteConverterICU.createConverter(testEncoderName);
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int num =0;
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public void call() {
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try{
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numOut= conv.convert(unicodeBuffer, 0,unicodeBuffer.length,dst,0, dst.length);
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conv.reset();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return unicodeBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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*/
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PerfTest.Function TestCharsetDecoder() {
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try{
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return new PerfTest.Function() {
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CharBuffer outBuf = CharBuffer.allocate(unicodeBuffer.length);
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Charset myCharset = Charset.forName(testEncoderName);
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ByteBuffer srcBuf = ByteBuffer.wrap(encBuffer,0,encBuffer.length);
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CharsetDecoder decoder = myCharset.newDecoder();
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public void call() {
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try{
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decoder.decode(srcBuf,outBuf,false);
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decoder.reset();
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srcBuf.rewind();
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outBuf.rewind();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return encBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestCharsetEncoder() {
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try{
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return new PerfTest.Function() {
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ByteBuffer outBuf = ByteBuffer.allocate(encBuffer.length);
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Charset myCharset = Charset.forName(testEncoderName);
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CharBuffer srcBuf = CharBuffer.wrap(unicodeBuffer,0,unicodeBuffer.length);
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CharsetEncoder encoder = myCharset.newEncoder();
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public void call() {
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try{
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encoder.encode(srcBuf,outBuf,false);
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encoder.reset();
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srcBuf.rewind();
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outBuf.rewind();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return unicodeBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestCharsetDecoderICU() {
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try{
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return new PerfTest.Function() {
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CharBuffer outBuf = CharBuffer.allocate(unicodeBuffer.length);
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Charset myCharset = new CharsetProviderICU().charsetForName(testEncoderName);
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ByteBuffer srcBuf = ByteBuffer.wrap(encBuffer,0,encBuffer.length);
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CharsetDecoder decoder = myCharset.newDecoder();
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public void call() {
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try{
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decoder.decode(srcBuf,outBuf,false);
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decoder.reset();
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srcBuf.rewind();
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outBuf.rewind();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return encBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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PerfTest.Function TestCharsetEncoderICU() {
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try{
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return new PerfTest.Function() {
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ByteBuffer outBuf = ByteBuffer.allocate(encBuffer.length);
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Charset myCharset = new CharsetProviderICU().charsetForName(testEncoderName);
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CharBuffer srcBuf = CharBuffer.wrap(unicodeBuffer,0,unicodeBuffer.length);
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CharsetEncoder encoder = myCharset.newEncoder();
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public void call() {
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try{
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encoder.encode(srcBuf,outBuf,false);
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encoder.reset();
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srcBuf.rewind();
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outBuf.rewind();
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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public long getOperationsPerIteration() {
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return unicodeBuffer.length;
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}
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};
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}catch(Exception e){
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e.printStackTrace();
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throw new RuntimeException(e.getMessage());
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}
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}
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}
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507
icu4j/src/com/ibm/icu/dev/test/perf/runPerfConv.pl
Executable file
507
icu4j/src/com/ibm/icu/dev/test/perf/runPerfConv.pl
Executable file
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#!/usr/local/bin/perl
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use strict;
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# Assume we are running within the icu4jni root directory
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use lib 'c:/svn/icu4j/src/com/ibm/icu/dev/test/perf';
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use Dataset;
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# Copyright (c) 2002-2004, International Business Machines Corporation
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# and others. All rights reserved.
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#---------------------------------------------------------------------
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# Test class
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my $TESTCLASS = 'com.ibm.icu.dev.test.perf.ConverterPerformanceTest';
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# Methods to be tested. Each pair represents a test method and
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# a baseline method which is used for comparison.
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my @METHODS = (
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## ['TestByteToCharConverter', 'TestByteToCharConverterICU'],
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## ['TestCharToByteConverter', 'TestCharToByteConverterICU'],
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['TestCharsetDecoder', 'TestCharsetDecoderICU'],
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['TestCharsetEncoder', 'TestCharsetEncoderICU']
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);
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# Patterns which define the set of characters used for testing.
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my $SOURCEDIR ="C:\\src\\perf\\data\\";
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my @OPTIONS = (
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# src text src encoding test encoding
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# [ "arabic.txt", "UTF-8", "csisolatinarabic"],
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[ "french.txt", "UTF-8", "csisolatin1"],
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# [ "greek.txt", "UTF-8", "csisolatingreek"],
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# [ "hebrew.txt", "UTF-8", "csisolatinhebrew"],
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# [ "hindi.txt" , "UTF-8", "iscii"],
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# [ "japanese.txt", "UTF-8", "EUC-JP"],
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# [ "japanese.txt", "UTF-8", "csiso2022jp"],
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# [ "japanese.txt", "UTF-8", "shift_jis"],
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# [ "korean.txt", "UTF-8", "csiso2022kr"],
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# [ "korean.txt", "UTF-8", "EUC-KR"],
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# [ "s-chinese.txt", "UTF-8", "EUC_CN"],
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# [ "arabic.txt", "UTF-8", "UTF-8"],
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# [ "french.txt", "UTF-8", "UTF-8"],
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# [ "greek.txt", "UTF-8", "UTF-8"],
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# [ "hebrew.txt", "UTF-8", "UTF-8"],
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# [ "hindi.txt" , "UTF-8", "UTF-8"],
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# [ "japanese.txt", "UTF-8", "UTF-8"],
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# [ "korean.txt", "UTF-8", "UTF-8"],
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# [ "s-chinese.txt", "UTF-8", "UTF-8"],
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# [ "french.txt", "UTF-8", "UTF-16BE"],
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# [ "french.txt", "UTF-8", "UTF-16LE"],
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[ "english.txt", "UTF-8", "US-ASCII"],
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);
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my $CALIBRATE = 2; # duration in seconds for initial calibration
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my $DURATION = 10; # duration in seconds for each pass
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my $NUMPASSES = 4; # number of passes. If > 1 then the first pass
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# is discarded as a JIT warm-up pass.
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my $TABLEATTR = 'BORDER="1" CELLPADDING="4" CELLSPACING="0"';
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my $PLUS_MINUS = "±";
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if ($NUMPASSES < 3) {
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die "Need at least 3 passes. One is discarded (JIT warmup) and need two to have 1 degree of freedom (t distribution).";
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}
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my $OUT; # see out()
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main();
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#---------------------------------------------------------------------
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# ...
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sub main {
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my $date = localtime;
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my $title = "ICU4J Performance Test $date";
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my $html = $date;
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$html =~ s/://g; # ':' illegal
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$html =~ s/\s*\d+$//; # delete year
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$html =~ s/^\w+\s*//; # delete dow
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$html = "perf $html.html";
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open(HTML,">$html") or die "Can't write to $html: $!";
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print HTML <<EOF;
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
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"http://www.w3.org/TR/html4/strict.dtd">
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<HTML>
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<HEAD>
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<TITLE>$title</TITLE>
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</HEAD>
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<BODY>
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EOF
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print HTML "<H1>$title</H1>\n";
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print HTML "<H2>$TESTCLASS</H2>\n";
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my $raw = "";
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for my $methodPair (@METHODS) {
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my $testMethod = $methodPair->[0];
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my $baselineMethod = $methodPair->[1];
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print HTML "<P><TABLE $TABLEATTR><TR><TD>\n";
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print HTML "<P><B>$testMethod vs. $baselineMethod</B></P>\n";
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print HTML "<P><TABLE $TABLEATTR BGCOLOR=\"#CCFFFF\">\n";
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print HTML "<TR><TD>Options</TD><TD>$testMethod</TD>";
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print HTML "<TD>$baselineMethod</TD><TD>Ratio</TD></TR>\n";
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$OUT = '';
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for my $pat (@OPTIONS) {
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print HTML "<TR><TD>@$pat[0], @$pat[2]</TD>\n";
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out("<P><TABLE $TABLEATTR WIDTH=\"100%\">");
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# measure the test method
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out("<TR><TD>");
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print "\n$testMethod [@$pat]\n";
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my $t = measure2($testMethod, $pat, -$DURATION);
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out("</TD></TR>");
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print HTML "<TD>", formatSeconds(4, $t->getMean(), $t->getError);
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print HTML "/event</TD>\n";
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# measure baseline method
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out("<TR><TD>");
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print "\n$baselineMethod [@$pat]\n";
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my $b = measure2($baselineMethod, $pat, -$DURATION);
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out("</TD></TR>");
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print HTML "<TD>", formatSeconds(4, $b->getMean(), $t->getError);
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print HTML "/event</TD>\n";
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out("</TABLE></P>");
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# output ratio
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my $r = $t->divide($b);
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my $mean = $r->getMean() - 1;
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my $color = $mean < 0 ? "RED" : "BLACK";
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print HTML "<TD><B><FONT COLOR=\"$color\">", formatPercent(3, $mean, $r->getError);
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print HTML "</FONT></B></TD></TR>\n";
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}
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print HTML "</TABLE></P>\n";
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print HTML "<P>Raw data:</P>\n";
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print HTML $OUT;
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print HTML "</TABLE></P>\n";
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}
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print HTML <<EOF;
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</BODY>
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</HTML>
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EOF
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close(HTML) or die "Can't close $html: $!";
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}
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#---------------------------------------------------------------------
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# Append text to the global variable $OUT
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sub out {
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$OUT .= join('', @_);
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}
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||||
|
||||
#---------------------------------------------------------------------
|
||||
# Append text to the global variable $OUT
|
||||
sub outln {
|
||||
$OUT .= join('', @_) . "\n";
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Measure a given test method with a give test pattern using the
|
||||
# global run parameters.
|
||||
#
|
||||
# @param the method to run
|
||||
# @param the pattern defining characters to test
|
||||
# @param if >0 then the number of iterations per pass. If <0 then
|
||||
# (negative of) the number of seconds per pass.
|
||||
#
|
||||
# @return a Dataset object, scaled by iterations per pass and
|
||||
# events per iteration, to give time per event
|
||||
#
|
||||
sub measure2 {
|
||||
my @data = measure1(@_);
|
||||
my $iterPerPass = shift(@data);
|
||||
my $eventPerIter = shift(@data);
|
||||
|
||||
shift(@data) if (@data > 1); # discard first run
|
||||
|
||||
my $ds = Dataset->new(@data);
|
||||
$ds->setScale(1.0e-3 / ($iterPerPass * $eventPerIter));
|
||||
$ds;
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Measure a given test method with a give test pattern using the
|
||||
# global run parameters.
|
||||
#
|
||||
# @param the method to run
|
||||
# @param the pattern defining characters to test
|
||||
# @param if >0 then the number of iterations per pass. If <0 then
|
||||
# (negative of) the number of seconds per pass.
|
||||
#
|
||||
# @return array of:
|
||||
# [0] iterations per pass
|
||||
# [1] events per iteration
|
||||
# [2..] ms reported for each pass, in order
|
||||
#
|
||||
sub measure1 {
|
||||
my $method = shift;
|
||||
my $pat = shift;
|
||||
my $iterCount = shift; # actually might be -seconds/pass
|
||||
|
||||
out("<P>Measuring $method for input file @$pat[0] for encoding @$pat[2] , ");
|
||||
if ($iterCount > 0) {
|
||||
out("$iterCount iterations/pass, $NUMPASSES passes</P>\n");
|
||||
} else {
|
||||
out(-$iterCount, " seconds/pass, $NUMPASSES passes</P>\n");
|
||||
}
|
||||
|
||||
# is $iterCount actually -seconds/pass?
|
||||
if ($iterCount < 0) {
|
||||
|
||||
# calibrate: estimate ms/iteration
|
||||
print "Calibrating...";
|
||||
my @t = callJava($method, $pat, -$CALIBRATE, 1);
|
||||
print "done.\n";
|
||||
|
||||
my @data = split(/\s+/, $t[0]->[2]);
|
||||
$data[0] *= 1.0e+3;
|
||||
|
||||
my $timePerIter = 1.0e-3 * $data[0] / $data[1];
|
||||
|
||||
# determine iterations/pass
|
||||
$iterCount = int(-$iterCount / $timePerIter + 0.5);
|
||||
|
||||
out("<P>Calibration pass ($CALIBRATE sec): ");
|
||||
out("$data[0] ms, ");
|
||||
out("$data[1] iterations = ");
|
||||
out(formatSeconds(4, $timePerIter), "/iteration<BR>\n");
|
||||
}
|
||||
|
||||
# run passes
|
||||
print "Measuring $iterCount iterations x $NUMPASSES passes...";
|
||||
my @t = callJava($method, $pat, $iterCount, $NUMPASSES);
|
||||
print "done.\n";
|
||||
my @ms = ();
|
||||
my @b; # scratch
|
||||
for my $a (@t) {
|
||||
# $a->[0]: method name, corresponds to $method
|
||||
# $a->[1]: 'begin' data, == $iterCount
|
||||
# $a->[2]: 'end' data, of the form <ms> <loops> <eventsPerIter>
|
||||
# $a->[3...]: gc messages from JVM during pass
|
||||
@b = split(/\s+/, $a->[2]);
|
||||
push(@ms, $b[0] * 1.0e+3);
|
||||
}
|
||||
my $eventsPerIter = $b[2];
|
||||
|
||||
out("Iterations per pass: $iterCount<BR>\n");
|
||||
out("Events per iteration: $eventsPerIter<BR>\n");
|
||||
|
||||
my @ms_str = @ms;
|
||||
$ms_str[0] .= " (discarded)" if (@ms_str > 1);
|
||||
out("Raw times (ms/pass): ", join(", ", @ms_str), "<BR>\n");
|
||||
|
||||
($iterCount, $eventsPerIter, @ms);
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Invoke java to run $TESTCLASS, passing it the given parameters.
|
||||
#
|
||||
# @param the method to run
|
||||
# @param the number of iterations, or if negative, the duration
|
||||
# in seconds. If more than on pass is desired, pass in
|
||||
# a string, e.g., "100 100 100".
|
||||
# @param the pattern defining characters to test
|
||||
#
|
||||
# @return an array of results. Each result is an array REF
|
||||
# describing one pass. The array REF contains:
|
||||
# ->[0]: The method name as reported
|
||||
# ->[1]: The params on the '= <meth> begin ...' line
|
||||
# ->[2]: The params on the '= <meth> end ...' line
|
||||
# ->[3..]: GC messages from the JVM, if any
|
||||
#
|
||||
sub callJava {
|
||||
my $method = shift;
|
||||
my $pat = shift;
|
||||
my $n = shift;
|
||||
my $passes = shift;
|
||||
my $fileName = $SOURCEDIR.@$pat[0] ;
|
||||
my $n = ($n < 0) ? "-t ".(-$n) : "-i ".$n;
|
||||
my $cmd = "c:\\j2sdk1.4.2_14\\bin\\java -classpath ;c:\\svn\\icu4j\\classes; $TESTCLASS $method $n -p $passes file_name $fileName src_encoding @$pat[1] test @$pat[2]";
|
||||
print "[$cmd]\n"; # for debugging
|
||||
open(PIPE, "$cmd|") or die "Can't run \"$cmd\"";
|
||||
my @out;
|
||||
while (<PIPE>) {
|
||||
push(@out, $_);
|
||||
}
|
||||
close(PIPE) or die "Java failed: \"$cmd\"";
|
||||
|
||||
@out = grep(!/^\#/, @out); # filter out comments
|
||||
|
||||
#print "[", join("\n", @out), "]\n";
|
||||
|
||||
my @results;
|
||||
my $method = '';
|
||||
my $data = [];
|
||||
foreach (@out) {
|
||||
next unless (/\S/);
|
||||
|
||||
if (/^=\s*(\w+)\s*(\w+)\s*(.*)/) {
|
||||
my ($m, $state, $d) = ($1, $2, $3);
|
||||
#print "$_ => [[$m $state $data]]\n";
|
||||
if ($state eq 'begin') {
|
||||
die "$method was begun but not finished" if ($method);
|
||||
$method = $m;
|
||||
push(@$data, $d);
|
||||
push(@$data, ''); # placeholder for end data
|
||||
} elsif ($state eq 'end') {
|
||||
if ($m ne $method) {
|
||||
die "$method end does not match: $_";
|
||||
}
|
||||
$data->[1] = $d; # insert end data at [1]
|
||||
#print "#$method:", join(";",@$data), "\n";
|
||||
unshift(@$data, $method); # add method to start
|
||||
|
||||
push(@results, $data);
|
||||
$method = '';
|
||||
$data = [];
|
||||
} else {
|
||||
die "Can't parse: $_";
|
||||
}
|
||||
}
|
||||
|
||||
elsif (/^\[/) {
|
||||
if ($method) {
|
||||
push(@$data, $_);
|
||||
} else {
|
||||
# ignore extraneous GC notices
|
||||
}
|
||||
}
|
||||
|
||||
else {
|
||||
die "Can't parse: $_";
|
||||
}
|
||||
}
|
||||
|
||||
die "$method was begun but not finished" if ($method);
|
||||
|
||||
@results;
|
||||
}
|
||||
|
||||
#|#---------------------------------------------------------------------
|
||||
#|# Format a confidence interval, as given by a Dataset. Output is as
|
||||
#|# as follows:
|
||||
#|# 241.23 - 241.98 => 241.5 +/- 0.3
|
||||
#|# 241.2 - 243.8 => 242 +/- 1
|
||||
#|# 211.0 - 241.0 => 226 +/- 15 or? 230 +/- 20
|
||||
#|# 220.3 - 234.3 => 227 +/- 7
|
||||
#|# 220.3 - 300.3 => 260 +/- 40
|
||||
#|# 220.3 - 1000 => 610 +/- 390 or? 600 +/- 400
|
||||
#|# 0.022 - 0.024 => 0.023 +/- 0.001
|
||||
#|# 0.022 - 0.032 => 0.027 +/- 0.005
|
||||
#|# 0.022 - 1.000 => 0.5 +/- 0.5
|
||||
#|# In other words, take one significant digit of the error value and
|
||||
#|# display the mean to the same precision.
|
||||
#|sub formatDataset {
|
||||
#| my $ds = shift;
|
||||
#| my $lower = $ds->getMean() - $ds->getError();
|
||||
#| my $upper = $ds->getMean() + $ds->getError();
|
||||
#| my $scale = 0;
|
||||
#| # Find how many initial digits are the same
|
||||
#| while ($lower < 1 ||
|
||||
#| int($lower) == int($upper)) {
|
||||
#| $lower *= 10;
|
||||
#| $upper *= 10;
|
||||
#| $scale++;
|
||||
#| }
|
||||
#| while ($lower >= 10 &&
|
||||
#| int($lower) == int($upper)) {
|
||||
#| $lower /= 10;
|
||||
#| $upper /= 10;
|
||||
#| $scale--;
|
||||
#| }
|
||||
#|}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Format a number, optionally with a +/- delta, to n significant
|
||||
# digits.
|
||||
#
|
||||
# @param significant digit, a value >= 1
|
||||
# @param multiplier
|
||||
# @param time in seconds to be formatted
|
||||
# @optional delta in seconds
|
||||
#
|
||||
# @return string of the form "23" or "23 +/- 10".
|
||||
#
|
||||
sub formatNumber {
|
||||
my $sigdig = shift;
|
||||
my $mult = shift;
|
||||
my $a = shift;
|
||||
my $delta = shift; # may be undef
|
||||
|
||||
my $result = formatSigDig($sigdig, $a*$mult);
|
||||
if (defined($delta)) {
|
||||
my $d = formatSigDig($sigdig, $delta*$mult);
|
||||
# restrict PRECISION of delta to that of main number
|
||||
if ($result =~ /\.(\d+)/) {
|
||||
# TODO make this work for values with all significant
|
||||
# digits to the left of the decimal, e.g., 1234000.
|
||||
|
||||
# TODO the other thing wrong with this is that it
|
||||
# isn't rounding the $delta properly. Have to put
|
||||
# this logic into formatSigDig().
|
||||
my $x = length($1);
|
||||
$d =~ s/\.(\d{$x})\d+/.$1/;
|
||||
}
|
||||
$result .= " $PLUS_MINUS " . $d;
|
||||
}
|
||||
$result;
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Format a time, optionally with a +/- delta, to n significant
|
||||
# digits.
|
||||
#
|
||||
# @param significant digit, a value >= 1
|
||||
# @param time in seconds to be formatted
|
||||
# @optional delta in seconds
|
||||
#
|
||||
# @return string of the form "23 ms" or "23 +/- 10 ms".
|
||||
#
|
||||
sub formatSeconds {
|
||||
my $sigdig = shift;
|
||||
my $a = shift;
|
||||
my $delta = shift; # may be undef
|
||||
|
||||
my @MULT = (1 , 1e3, 1e6, 1e9);
|
||||
my @SUFF = ('s' , 'ms', 'us', 'ns');
|
||||
|
||||
# Determine our scale
|
||||
my $i = 0;
|
||||
++$i while ($a*$MULT[$i] < 1 && $i < @MULT);
|
||||
|
||||
formatNumber($sigdig, $MULT[$i], $a, $delta) . ' ' . $SUFF[$i];
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Format a percentage, optionally with a +/- delta, to n significant
|
||||
# digits.
|
||||
#
|
||||
# @param significant digit, a value >= 1
|
||||
# @param value to be formatted, as a fraction, e.g. 0.5 for 50%
|
||||
# @optional delta, as a fraction
|
||||
#
|
||||
# @return string of the form "23 %" or "23 +/- 10 %".
|
||||
#
|
||||
sub formatPercent {
|
||||
my $sigdig = shift;
|
||||
my $a = shift;
|
||||
my $delta = shift; # may be undef
|
||||
|
||||
formatNumber($sigdig, 100, $a, $delta) . ' %';
|
||||
}
|
||||
|
||||
#---------------------------------------------------------------------
|
||||
# Format a number to n significant digits without using exponential
|
||||
# notation.
|
||||
#
|
||||
# @param significant digit, a value >= 1
|
||||
# @param number to be formatted
|
||||
#
|
||||
# @return string of the form "1234" "12.34" or "0.001234". If
|
||||
# number was negative, prefixed by '-'.
|
||||
#
|
||||
sub formatSigDig {
|
||||
my $n = shift() - 1;
|
||||
my $a = shift;
|
||||
|
||||
local $_ = sprintf("%.${n}e", $a);
|
||||
my $sign = (s/^-//) ? '-' : '';
|
||||
|
||||
my $a_e;
|
||||
my $result;
|
||||
if (/^(\d)\.(\d+)e([-+]\d+)$/) {
|
||||
my ($d, $dn, $e) = ($1, $2, $3);
|
||||
$a_e = $e;
|
||||
$d .= $dn;
|
||||
$e++;
|
||||
$d .= '0' while ($e > length($d));
|
||||
while ($e < 1) {
|
||||
$e++;
|
||||
$d = '0' . $d;
|
||||
}
|
||||
if ($e == length($d)) {
|
||||
$result = $sign . $d;
|
||||
} else {
|
||||
$result = $sign . substr($d, 0, $e) . '.' . substr($d, $e);
|
||||
}
|
||||
} else {
|
||||
die "Can't parse $_";
|
||||
}
|
||||
$result;
|
||||
}
|
||||
|
||||
#eof
|
||||
Loading…
Reference in New Issue
Block a user