78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
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// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <math.h>
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#include "v8.h"
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#include "dtoa.h"
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#include "double.h"
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#include "fast-dtoa.h"
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#include "fixed-dtoa.h"
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namespace v8 {
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namespace internal {
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bool DoubleToAscii(double v, DtoaMode mode, int requested_digits,
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Vector<char> buffer, int* sign, int* length, int* point) {
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ASSERT(!Double(v).IsSpecial());
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ASSERT(mode == DTOA_SHORTEST || requested_digits >= 0);
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if (Double(v).Sign() < 0) {
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*sign = 1;
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v = -v;
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} else {
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*sign = 0;
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}
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if (v == 0) {
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buffer[0] = '0';
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buffer[1] = '\0';
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*length = 1;
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*point = 1;
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return true;
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}
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if (mode == DTOA_PRECISION && requested_digits == 0) {
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buffer[0] = '\0';
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*length = 0;
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return true;
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}
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switch (mode) {
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case DTOA_SHORTEST:
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return FastDtoa(v, buffer, length, point);
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case DTOA_FIXED:
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return FastFixedDtoa(v, requested_digits, buffer, length, point);
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default:
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break;
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}
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return false;
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}
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} } // namespace v8::internal
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