diff --git a/src/hydrogen-load-elimination.cc b/src/hydrogen-load-elimination.cc index f33ebe2fab..3337188f9a 100644 --- a/src/hydrogen-load-elimination.cc +++ b/src/hydrogen-load-elimination.cc @@ -212,7 +212,7 @@ class HLoadEliminationTable : public ZoneObject { // instruction is redundant. Otherwise, return {instr}. HValue* store(HStoreNamedField* instr) { int field = FieldOf(instr->access()); - if (field < 0) return instr; + if (field < 0) return KillIfMisaligned(instr); HValue* object = instr->object()->ActualValue(); HValue* value = instr->value(); @@ -250,6 +250,38 @@ class HLoadEliminationTable : public ZoneObject { } } + // Kill all entries aliasing the given store. + void KillStore(HStoreNamedField* s) { + int field = FieldOf(s->access()); + if (field >= 0) { + KillFieldInternal(s->object()->ActualValue(), field, s->value()); + } else { + KillIfMisaligned(s); + } + } + + // Kill multiple entries in the case of a misaligned store. + HValue* KillIfMisaligned(HStoreNamedField* instr) { + HObjectAccess access = instr->access(); + if (access.IsInobject()) { + int offset = access.offset(); + if ((offset % kPointerSize) != 0) { + // Kill the field containing the first word of the access. + HValue* object = instr->object()->ActualValue(); + int field = offset / kPointerSize; + KillFieldInternal(object, field, NULL); + + // Kill the next field in case of overlap. + int size = kPointerSize; + if (access.representation().IsByte()) size = 1; + else if (access.representation().IsInteger32()) size = 4; + int next_field = (offset + size - 1) / kPointerSize; + if (next_field != field) KillFieldInternal(object, next_field, NULL); + } + } + return instr; + } + // Find an entry for the given object and field pair. HFieldApproximation* Find(HValue* object, int field) { // Search for a field approximation for this object. @@ -347,7 +379,8 @@ class HLoadEliminationTable : public ZoneObject { // Compute the field index for the given in-object offset; -1 if not tracked. int FieldOf(int offset) { if (offset >= kMaxTrackedFields * kPointerSize) return -1; - ASSERT((offset % kPointerSize) == 0); // Assume aligned accesses. + // TODO(titzer): track misaligned loads in a separate list? + if ((offset % kPointerSize) != 0) return -1; // Ignore misaligned accesses. return offset / kPointerSize; } @@ -430,11 +463,7 @@ class HLoadEliminationEffects : public ZoneObject { // Kill non-agreeing fields for each store contained in these effects. for (int i = 0; i < stores_.length(); i++) { - HStoreNamedField* s = stores_[i]; - int field = table->FieldOf(s->access()); - if (field >= 0) { - table->KillFieldInternal(s->object()->ActualValue(), field, s->value()); - } + table->KillStore(stores_[i]); } } diff --git a/test/mjsunit/number-tostring-add.js b/test/mjsunit/number-tostring-add.js new file mode 100644 index 0000000000..41d3cbd525 --- /dev/null +++ b/test/mjsunit/number-tostring-add.js @@ -0,0 +1,89 @@ +// Copyright 2013 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +function add(a, b) { + return a + b; +} + +function testToString(a, b) { + assertEquals(a, b.toString()); + assertEquals(a, "" + b); + assertEquals(a, add("", b)); + assertEquals("yes" + a, add("yes", b)); +} + +testToString("NaN", (NaN)); +testToString("Infinity", (1/0)); +testToString("-Infinity", (-1/0)); +testToString("0", (0)); +testToString("9", (9)); +testToString("90", (90)); +testToString("90.12", (90.12)); +testToString("0.1", (0.1)); +testToString("0.01", (0.01)); +testToString("0.0123", (0.0123)); +testToString("111111111111111110000", (111111111111111111111)); +testToString("1.1111111111111111e+21", (1111111111111111111111)); +testToString("1.1111111111111111e+22", (11111111111111111111111)); +testToString("0.00001", (0.00001)); +testToString("0.000001", (0.000001)); +testToString("1e-7", (0.0000001)); +testToString("1.2e-7", (0.00000012)); +testToString("1.23e-7", (0.000000123)); +testToString("1e-8", (0.00000001)); +testToString("1.2e-8", (0.000000012)); +testToString("1.23e-8", (0.0000000123)); + +testToString("0", (-0)); +testToString("-9", (-9)); +testToString("-90", (-90)); +testToString("-90.12", (-90.12)); +testToString("-0.1", (-0.1)); +testToString("-0.01", (-0.01)); +testToString("-0.0123", (-0.0123)); +testToString("-111111111111111110000", (-111111111111111111111)); +testToString("-1.1111111111111111e+21", (-1111111111111111111111)); +testToString("-1.1111111111111111e+22", (-11111111111111111111111)); +testToString("-0.00001", (-0.00001)); +testToString("-0.000001", (-0.000001)); +testToString("-1e-7", (-0.0000001)); +testToString("-1.2e-7", (-0.00000012)); +testToString("-1.23e-7", (-0.000000123)); +testToString("-1e-8", (-0.00000001)); +testToString("-1.2e-8", (-0.000000012)); +testToString("-1.23e-8", (-0.0000000123)); + +testToString("1000", (1000)); +testToString("0.00001", (0.00001)); +testToString("1000000000000000100", (1000000000000000128)); +testToString("1e+21", (1000000000000000012800)); +testToString("-1e+21", (-1000000000000000012800)); +testToString("1e-7", (0.0000001)); +testToString("-1e-7", (-0.0000001)); +testToString("1.0000000000000001e+21", (1000000000000000128000)); +testToString("0.000001", (0.000001)); +testToString("1e-7", (0.0000001)); diff --git a/test/mjsunit/number-tostring-func.js b/test/mjsunit/number-tostring-func.js new file mode 100644 index 0000000000..c64706e703 --- /dev/null +++ b/test/mjsunit/number-tostring-func.js @@ -0,0 +1,367 @@ +// Copyright 2013 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// ---------------------------------------------------------------------- +// toString +function testToString(a, b) { + assertEquals(a, b.toString()); +} + +function testToStringP(a, b, c) { + assertEquals(a, b.toString(c)); +} + +testToString("NaN", (NaN)); +testToString("Infinity", (1/0)); +testToString("-Infinity", (-1/0)); +testToString("0", (0)); +testToString("9", (9)); +testToString("90", (90)); +testToString("90.12", (90.12)); +testToString("0.1", (0.1)); +testToString("0.01", (0.01)); +testToString("0.0123", (0.0123)); +testToString("111111111111111110000", (111111111111111111111)); +testToString("1.1111111111111111e+21", (1111111111111111111111)); +testToString("1.1111111111111111e+22", (11111111111111111111111)); +testToString("0.00001", (0.00001)); +testToString("0.000001", (0.000001)); +testToString("1e-7", (0.0000001)); +testToString("1.2e-7", (0.00000012)); +testToString("1.23e-7", (0.000000123)); +testToString("1e-8", (0.00000001)); +testToString("1.2e-8", (0.000000012)); +testToString("1.23e-8", (0.0000000123)); + +testToString("0", (-0)); +testToString("-9", (-9)); +testToString("-90", (-90)); +testToString("-90.12", (-90.12)); +testToString("-0.1", (-0.1)); +testToString("-0.01", (-0.01)); +testToString("-0.0123", (-0.0123)); +testToString("-111111111111111110000", (-111111111111111111111)); +testToString("-1.1111111111111111e+21", (-1111111111111111111111)); +testToString("-1.1111111111111111e+22", (-11111111111111111111111)); +testToString("-0.00001", (-0.00001)); +testToString("-0.000001", (-0.000001)); +testToString("-1e-7", (-0.0000001)); +testToString("-1.2e-7", (-0.00000012)); +testToString("-1.23e-7", (-0.000000123)); +testToString("-1e-8", (-0.00000001)); +testToString("-1.2e-8", (-0.000000012)); +testToString("-1.23e-8", (-0.0000000123)); + +testToString("1000", (1000)); +testToString("0.00001", (0.00001)); +testToString("1000000000000000100", (1000000000000000128)); +testToString("1e+21", (1000000000000000012800)); +testToString("-1e+21", (-1000000000000000012800)); +testToString("1e-7", (0.0000001)); +testToString("-1e-7", (-0.0000001)); +testToString("1.0000000000000001e+21", (1000000000000000128000)); +testToString("0.000001", (0.000001)); +testToString("1e-7", (0.0000001)); + +testToStringP("NaN", (NaN), 16); +testToStringP("Infinity", (1/0), 16); +testToStringP("-Infinity", (-1/0), 16); +testToStringP("0", (0), 16); +testToStringP("9", (9), 16); +testToStringP("5a", (90), 16); +testToStringP("5a.1eb851eb852", (90.12), 16); +testToStringP("0.1999999999999a", (0.1), 16); +testToStringP("0.028f5c28f5c28f6", (0.01), 16); +testToStringP("0.032617c1bda511a", (0.0123), 16); +testToStringP("605f9f6dd18bc8000", (111111111111111111111), 16); +testToStringP("3c3bc3a4a2f75c0000", (1111111111111111111111), 16); +testToStringP("25a55a46e5da9a00000", (11111111111111111111111), 16); +testToStringP("0.0000a7c5ac471b4788", (0.00001), 16); +testToStringP("0.000010c6f7a0b5ed8d", (0.000001), 16); +testToStringP("0.000001ad7f29abcaf48", (0.0000001), 16); +testToStringP("0.000002036565348d256", (0.00000012), 16); +testToStringP("0.0000021047ee22aa466", (0.000000123), 16); +testToStringP("0.0000002af31dc4611874", (0.00000001), 16); +testToStringP("0.000000338a23b87483be", (0.000000012), 16); +testToStringP("0.00000034d3fe36aaa0a2", (0.0000000123), 16); + +testToStringP("0", (-0), 16); +testToStringP("-9", (-9), 16); +testToStringP("-5a", (-90), 16); +testToStringP("-5a.1eb851eb852", (-90.12), 16); +testToStringP("-0.1999999999999a", (-0.1), 16); +testToStringP("-0.028f5c28f5c28f6", (-0.01), 16); +testToStringP("-0.032617c1bda511a", (-0.0123), 16); +testToStringP("-605f9f6dd18bc8000", (-111111111111111111111), 16); +testToStringP("-3c3bc3a4a2f75c0000", (-1111111111111111111111), 16); +testToStringP("-25a55a46e5da9a00000", (-11111111111111111111111), 16); +testToStringP("-0.0000a7c5ac471b4788", (-0.00001), 16); +testToStringP("-0.000010c6f7a0b5ed8d", (-0.000001), 16); +testToStringP("-0.000001ad7f29abcaf48", (-0.0000001), 16); +testToStringP("-0.000002036565348d256", (-0.00000012), 16); +testToStringP("-0.0000021047ee22aa466", (-0.000000123), 16); +testToStringP("-0.0000002af31dc4611874", (-0.00000001), 16); +testToStringP("-0.000000338a23b87483be", (-0.000000012), 16); +testToStringP("-0.00000034d3fe36aaa0a2", (-0.0000000123), 16); + +testToString("4294967296", Math.pow(2,32)); +testToStringP("ffffffff", (Math.pow(2,32)-1), 16); +testToStringP("11111111111111111111111111111111", (Math.pow(2,32)-1), 2); +testToStringP("5yc1z", (10000007), 36); +testToStringP("0", (0), 36); +testToStringP("0", (0), 16); +testToStringP("0", (0), 10); +testToStringP("0", (0), 8); +testToStringP("0", (0), 2); +testToStringP("100000000000000000000000000000000", Math.pow(2,32), 2); +testToStringP("100000000000000000000000000000001", (Math.pow(2,32) + 1), 2); +testToStringP("100000000000080", (0x100000000000081), 16); +testToStringP("1000000000000100", (-(-'0x1000000000000081')), 16); +testToStringP("1000000000000000", (-(-'0x1000000000000080')), 16); +testToStringP("1000000000000000", (-(-'0x100000000000007F')), 16); +testToStringP("100000000000000000000000000000000000000000000000010000000", (0x100000000000081), 2); +testToStringP("-11111111111111111111111111111111", (-(Math.pow(2,32)-1)), 2); +testToStringP("-5yc1z", (-10000007), 36); +testToStringP("-100000000000000000000000000000000", (-Math.pow(2,32)), 2); +testToStringP("-100000000000000000000000000000001", (-(Math.pow(2,32) + 1)), 2); +testToStringP("-100000000000080", (-0x100000000000081), 16); +testToStringP("-100000000000000000000000000000000000000000000000010000000", (-0x100000000000081), 2); +testToStringP("8.8", (8.5), 16); +testToStringP("-8.8", (-8.5), 16); + +// ---------------------------------------------------------------------- +// toFixed +function testToFixed(a, b, c) { + assertEquals(a, b.toFixed(c)); +} + +testToFixed("NaN", (NaN), (2)); +testToFixed("Infinity", (1/0), (2)); +testToFixed("-Infinity", (-1/0), (2)); + +testToFixed("1.1111111111111111e+21", (1111111111111111111111), (8)); +testToFixed("0.1", (0.1), (1)); +testToFixed("0.10", (0.1), (2)); +testToFixed("0.100", (0.1), (3)); +testToFixed("0.01", (0.01), (2)); +testToFixed("0.010", (0.01), (3)); +testToFixed("0.0100", (0.01), (4)); +testToFixed("0.00", (0.001), (2)); +testToFixed("0.001", (0.001), (3)); +testToFixed("0.0010", (0.001), (4)); +testToFixed("1.0000", (1), (4)); +testToFixed("1.0", (1), (1)); +testToFixed("1", (1), (0)); +testToFixed("12", (12), (0)); +testToFixed("1", (1.1), (0)); +testToFixed("12", (12.1), (0)); +testToFixed("1", (1.12), (0)); +testToFixed("12", (12.12), (0)); +testToFixed("0.0000006", (0.0000006), (7)); +testToFixed("0.00000006", (0.00000006), (8)); +testToFixed("0.000000060", (0.00000006), (9)); +testToFixed("0.0000000600", (0.00000006), (10)); +testToFixed("0", (0), (0)); +testToFixed("0.0", (0), (1)); +testToFixed("0.00", (0), (2)); + +testToFixed("-1.1111111111111111e+21", (-1111111111111111111111), (8)); +testToFixed("-0.1", (-0.1), (1)); +testToFixed("-0.10", (-0.1), (2)); +testToFixed("-0.100", (-0.1), (3)); +testToFixed("-0.01", (-0.01), (2)); +testToFixed("-0.010", (-0.01), (3)); +testToFixed("-0.0100", (-0.01), (4)); +testToFixed("-0.00", (-0.001), (2)); +testToFixed("-0.001", (-0.001), (3)); +testToFixed("-0.0010", (-0.001), (4)); +testToFixed("-1.0000", (-1), (4)); +testToFixed("-1.0", (-1), (1)); +testToFixed("-1", (-1), (0)); +testToFixed("-1", (-1.1), (0)); +testToFixed("-12", (-12.1), (0)); +testToFixed("-1", (-1.12), (0)); +testToFixed("-12", (-12.12), (0)); +testToFixed("-0.0000006", (-0.0000006), (7)); +testToFixed("-0.00000006", (-0.00000006), (8)); +testToFixed("-0.000000060", (-0.00000006), (9)); +testToFixed("-0.0000000600", (-0.00000006), (10)); +testToFixed("0", (-0), (0)); +testToFixed("0.0", (-0), (1)); +testToFixed("0.00", (-0), (2)); + +testToFixed("0.00001", (0.00001), (5)); +testToFixed("0.00000000000000000010", (0.0000000000000000001), (20)); +testToFixed("0.00001000000000000", (0.00001), (17)); +testToFixed("1.00000000000000000", (1), (17)); +testToFixed("100000000000000128.0", (100000000000000128), (1)); +testToFixed("10000000000000128.00", (10000000000000128), (2)); +testToFixed("10000000000000128.00000000000000000000", (10000000000000128), (20)); +testToFixed("-42.000", (-42), (3)); +testToFixed("-0.00000000000000000010", (-0.0000000000000000001), (20)); +testToFixed("0.12312312312312299889", (0.123123123123123), (20)); + +assertEquals("-1000000000000000128", (-1000000000000000128).toFixed()); +assertEquals("0", (0).toFixed()); +assertEquals("1000000000000000128", (1000000000000000128).toFixed()); +assertEquals("1000", (1000).toFixed()); +assertEquals("0", (0.00001).toFixed()); +// Test that we round up even when the last digit generated is even. +// dtoa does not do this in its original form. +assertEquals("1", 0.5.toFixed(0), "0.5.toFixed(0)"); +assertEquals("-1", (-0.5).toFixed(0), "(-0.5).toFixed(0)"); +assertEquals("1.3", 1.25.toFixed(1), "1.25.toFixed(1)"); +// This is bizare, but Spidermonkey and KJS behave the same. +assertEquals("234.2040", (234.20405).toFixed(4), "234.2040.toFixed(4)"); +assertEquals("234.2041", (234.2040506).toFixed(4)); + +// ---------------------------------------------------------------------- +// toExponential +function testToExponential(a, b) { + assertEquals(a, b.toExponential()); +} + +function testToExponentialP(a, b, c) { + assertEquals(a, b.toExponential(c)); +} + +testToExponential("1e+0", (1)); +testToExponential("1.1e+1", (11)); +testToExponential("1.12e+2", (112)); +testToExponential("1e-1", (0.1)); +testToExponential("1.1e-1", (0.11)); +testToExponential("1.12e-1", (0.112)); +testToExponential("-1e+0", (-1)); +testToExponential("-1.1e+1", (-11)); +testToExponential("-1.12e+2", (-112)); +testToExponential("-1e-1", (-0.1)); +testToExponential("-1.1e-1", (-0.11)); +testToExponential("-1.12e-1", (-0.112)); +testToExponential("0e+0", (0)); +testToExponential("1.12356e-4", (0.000112356)); +testToExponential("-1.12356e-4", (-0.000112356)); + +testToExponentialP("1e+0", (1), (0)); +testToExponentialP("1e+1", (11), (0)); +testToExponentialP("1e+2", (112), (0)); +testToExponentialP("1.0e+0", (1), (1)); +testToExponentialP("1.1e+1", (11), (1)); +testToExponentialP("1.1e+2", (112), (1)); +testToExponentialP("1.00e+0", (1), (2)); +testToExponentialP("1.10e+1", (11), (2)); +testToExponentialP("1.12e+2", (112), (2)); +testToExponentialP("1.000e+0", (1), (3)); +testToExponentialP("1.100e+1", (11), (3)); +testToExponentialP("1.120e+2", (112), (3)); +testToExponentialP("1e-1", (0.1), (0)); +testToExponentialP("1e-1", (0.11), (0)); +testToExponentialP("1e-1", (0.112), (0)); +testToExponentialP("1.0e-1", (0.1), (1)); +testToExponentialP("1.1e-1", (0.11), (1)); +testToExponentialP("1.1e-1", (0.112), (1)); +testToExponentialP("1.00e-1", (0.1), (2)); +testToExponentialP("1.10e-1", (0.11), (2)); +testToExponentialP("1.12e-1", (0.112), (2)); +testToExponentialP("1.000e-1", (0.1), (3)); +testToExponentialP("1.100e-1", (0.11), (3)); +testToExponentialP("1.120e-1", (0.112), (3)); + +testToExponentialP("-1e+0", (-1), (0)); +testToExponentialP("-1e+1", (-11), (0)); +testToExponentialP("-1e+2", (-112), (0)); +testToExponentialP("-1.0e+0", (-1), (1)); +testToExponentialP("-1.1e+1", (-11), (1)); +testToExponentialP("-1.1e+2", (-112), (1)); +testToExponentialP("-1.00e+0", (-1), (2)); +testToExponentialP("-1.10e+1", (-11), (2)); +testToExponentialP("-1.12e+2", (-112), (2)); +testToExponentialP("-1.000e+0", (-1), (3)); +testToExponentialP("-1.100e+1", (-11), (3)); +testToExponentialP("-1.120e+2", (-112), (3)); +testToExponentialP("-1e-1", (-0.1), (0)); +testToExponentialP("-1e-1", (-0.11), (0)); +testToExponentialP("-1e-1", (-0.112), (0)); +testToExponentialP("-1.0e-1", (-0.1), (1)); +testToExponentialP("-1.1e-1", (-0.11), (1)); +testToExponentialP("-1.1e-1", (-0.112), (1)); +testToExponentialP("-1.00e-1", (-0.1), (2)); +testToExponentialP("-1.10e-1", (-0.11), (2)); +testToExponentialP("-1.12e-1", (-0.112), (2)); +testToExponentialP("-1.000e-1", (-0.1), (3)); +testToExponentialP("-1.100e-1", (-0.11), (3)); +testToExponentialP("-1.120e-1", (-0.112), (3)); + +testToExponentialP("NaN", (NaN), (2)); +testToExponentialP("Infinity", (Infinity), (2)); +testToExponentialP("-Infinity", (-Infinity), (2)); +testToExponentialP("1e+0", (1), (0)); +testToExponentialP("0.00e+0", (0), (2)); +testToExponentialP("1e+1", (11.2356), (0)); +testToExponentialP("1.1236e+1", (11.2356), (4)); +testToExponentialP("1.1236e-4", (0.000112356), (4)); +testToExponentialP("-1.1236e-4", (-0.000112356), (4)); + +// ---------------------------------------------------------------------- +// toPrecision +function testToPrecision(a, b, c) { + assertEquals(a, b.toPrecision(c)); +} + +testToPrecision("NaN", (NaN), (1)); +testToPrecision("Infinity", (Infinity), (2)); +testToPrecision("-Infinity", (-Infinity), (2)); +testToPrecision("0.000555000000000000", (0.000555), (15)); +testToPrecision("5.55000000000000e-7", (0.000000555), (15)); +testToPrecision("-5.55000000000000e-7", (-0.000000555), (15)); +testToPrecision("1e+8", (123456789), (1)); +testToPrecision("123456789", (123456789), (9)); +testToPrecision("1.2345679e+8", (123456789), (8)); +testToPrecision("1.234568e+8", (123456789), (7)); +testToPrecision("-1.234568e+8", (-123456789), (7)); +testToPrecision("-1.2e-9", Number(-.0000000012345), (2)); +testToPrecision("-1.2e-8", Number(-.000000012345), (2)); +testToPrecision("-1.2e-7", Number(-.00000012345), (2)); +testToPrecision("-0.0000012", Number(-.0000012345), (2)); +testToPrecision("-0.000012", Number(-.000012345), (2)); +testToPrecision("-0.00012", Number(-.00012345), (2)); +testToPrecision("-0.0012", Number(-.0012345), (2)); +testToPrecision("-0.012", Number(-.012345), (2)); +testToPrecision("-0.12", Number(-.12345), (2)); +testToPrecision("-1.2", Number(-1.2345), (2)); +testToPrecision("-12", Number(-12.345), (2)); +testToPrecision("-1.2e+2", Number(-123.45), (2)); +testToPrecision("-1.2e+3", Number(-1234.5), (2)); +testToPrecision("-1.2e+4", Number(-12345), (2)); +testToPrecision("-1.235e+4", Number(-12345.67), (4)); +testToPrecision("-1.234e+4", Number(-12344.67), (4)); +// Test that we round up even when the last digit generated is even. +// dtoa does not do this in its original form. +assertEquals("1.3", 1.25.toPrecision(2), "1.25.toPrecision(2)"); +assertEquals("1.4", 1.35.toPrecision(2), "1.35.toPrecision(2)"); + + +