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Diffstat (limited to 'V8Binding/v8/src/math.js')
| -rw-r--r-- | V8Binding/v8/src/math.js | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/V8Binding/v8/src/math.js b/V8Binding/v8/src/math.js deleted file mode 100644 index e3d266e..0000000 --- a/V8Binding/v8/src/math.js +++ /dev/null @@ -1,250 +0,0 @@ -// Copyright 2006-2008 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. - - -// Keep reference to original values of some global properties. This -// has the added benefit that the code in this file is isolated from -// changes to these properties. -const $Infinity = global.Infinity; -const $floor = MathFloor; -const $random = MathRandom; -const $abs = MathAbs; - -// Instance class name can only be set on functions. That is the only -// purpose for MathConstructor. -function MathConstructor() {} -%FunctionSetInstanceClassName(MathConstructor, 'Math'); -const $Math = new MathConstructor(); -$Math.__proto__ = global.Object.prototype; -%SetProperty(global, "Math", $Math, DONT_ENUM); - -// ECMA 262 - 15.8.2.1 -function MathAbs(x) { - if (%_IsSmi(x)) return x >= 0 ? x : -x; - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_abs(x); -} - -// ECMA 262 - 15.8.2.2 -function MathAcos(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_acos(x); -} - -// ECMA 262 - 15.8.2.3 -function MathAsin(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_asin(x); -} - -// ECMA 262 - 15.8.2.4 -function MathAtan(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_atan(x); -} - -// ECMA 262 - 15.8.2.5 -// The naming of y and x matches the spec, as does the order in which -// ToNumber (valueOf) is called. -function MathAtan2(y, x) { - if (!IS_NUMBER(y)) y = ToNumber(y); - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_atan2(y, x); -} - -// ECMA 262 - 15.8.2.6 -function MathCeil(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_ceil(x); -} - -// ECMA 262 - 15.8.2.7 -function MathCos(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %_Math_cos(x); -} - -// ECMA 262 - 15.8.2.8 -function MathExp(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_exp(x); -} - -// ECMA 262 - 15.8.2.9 -function MathFloor(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - // It's more common to call this with a positive number that's out - // of range than negative numbers; check the upper bound first. - if (x <= 0x7FFFFFFF && x > 0) { - // Numbers in the range [0, 2^31) can be floored by converting - // them to an unsigned 32-bit value using the shift operator. - // We avoid doing so for -0, because the result of Math.floor(-0) - // has to be -0, which wouldn't be the case with the shift. - return x << 0; - } else { - return %Math_floor(x); - } -} - -// ECMA 262 - 15.8.2.10 -function MathLog(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_log(x); -} - -// ECMA 262 - 15.8.2.11 -function MathMax(arg1, arg2) { // length == 2 - var r = -$Infinity; - var length = %_ArgumentsLength(); - for (var i = 0; i < length; i++) { - var n = ToNumber(%_Arguments(i)); - if (NUMBER_IS_NAN(n)) return n; - // Make sure +0 is considered greater than -0. - if (n > r || (r === 0 && n === 0 && !%_IsSmi(r))) r = n; - } - return r; -} - -// ECMA 262 - 15.8.2.12 -function MathMin(arg1, arg2) { // length == 2 - var r = $Infinity; - var length = %_ArgumentsLength(); - for (var i = 0; i < length; i++) { - var n = ToNumber(%_Arguments(i)); - if (NUMBER_IS_NAN(n)) return n; - // Make sure -0 is considered less than +0. - if (n < r || (r === 0 && n === 0 && !%_IsSmi(n))) r = n; - } - return r; -} - -// ECMA 262 - 15.8.2.13 -function MathPow(x, y) { - if (!IS_NUMBER(x)) x = ToNumber(x); - if (!IS_NUMBER(y)) y = ToNumber(y); - return %Math_pow(x, y); -} - -// ECMA 262 - 15.8.2.14 -function MathRandom() { - return %_RandomPositiveSmi() / 0x40000000; -} - -// ECMA 262 - 15.8.2.15 -function MathRound(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_round(x); -} - -// ECMA 262 - 15.8.2.16 -function MathSin(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %_Math_sin(x); -} - -// ECMA 262 - 15.8.2.17 -function MathSqrt(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_sqrt(x); -} - -// ECMA 262 - 15.8.2.18 -function MathTan(x) { - if (!IS_NUMBER(x)) x = ToNumber(x); - return %Math_tan(x); -} - - -// ------------------------------------------------------------------- - -function SetupMath() { - // Setup math constants. - // ECMA-262, section 15.8.1.1. - %OptimizeObjectForAddingMultipleProperties($Math, 8); - %SetProperty($Math, - "E", - 2.7182818284590452354, - DONT_ENUM | DONT_DELETE | READ_ONLY); - // ECMA-262, section 15.8.1.2. - %SetProperty($Math, - "LN10", - 2.302585092994046, - DONT_ENUM | DONT_DELETE | READ_ONLY); - // ECMA-262, section 15.8.1.3. - %SetProperty($Math, - "LN2", - 0.6931471805599453, - DONT_ENUM | DONT_DELETE | READ_ONLY); - // ECMA-262, section 15.8.1.4. - %SetProperty($Math, - "LOG2E", - 1.4426950408889634, - DONT_ENUM | DONT_DELETE | READ_ONLY); - %SetProperty($Math, - "LOG10E", - 0.43429448190325176, - DONT_ENUM | DONT_DELETE | READ_ONLY); - %SetProperty($Math, - "PI", - 3.1415926535897932, - DONT_ENUM | DONT_DELETE | READ_ONLY); - %SetProperty($Math, - "SQRT1_2", - 0.7071067811865476, - DONT_ENUM | DONT_DELETE | READ_ONLY); - %SetProperty($Math, - "SQRT2", - 1.4142135623730951, - DONT_ENUM | DONT_DELETE | READ_ONLY); - %TransformToFastProperties($Math); - - // Setup non-enumerable functions of the Math object and - // set their names. - InstallFunctionsOnHiddenPrototype($Math, DONT_ENUM, $Array( - "random", MathRandom, - "abs", MathAbs, - "acos", MathAcos, - "asin", MathAsin, - "atan", MathAtan, - "ceil", MathCeil, - "cos", MathCos, - "exp", MathExp, - "floor", MathFloor, - "log", MathLog, - "round", MathRound, - "sin", MathSin, - "sqrt", MathSqrt, - "tan", MathTan, - "atan2", MathAtan2, - "pow", MathPow, - "max", MathMax, - "min", MathMin - )); -}; - - -SetupMath(); |