mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
402 lines
8.5 KiB
C++
402 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef jsmath_h
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#define jsmath_h
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#include "mozilla/MemoryReporting.h"
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#include "NamespaceImports.h"
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#ifndef M_PI
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# define M_PI 3.14159265358979323846
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#endif
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#ifndef M_E
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# define M_E 2.7182818284590452354
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#endif
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#ifndef M_LOG2E
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# define M_LOG2E 1.4426950408889634074
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#endif
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#ifndef M_LOG10E
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# define M_LOG10E 0.43429448190325182765
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#endif
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#ifndef M_LN2
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# define M_LN2 0.69314718055994530942
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#endif
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#ifndef M_LN10
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# define M_LN10 2.30258509299404568402
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#endif
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#ifndef M_SQRT2
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# define M_SQRT2 1.41421356237309504880
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#endif
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#ifndef M_SQRT1_2
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# define M_SQRT1_2 0.70710678118654752440
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#endif
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namespace js {
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typedef double (*UnaryFunType)(double);
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class MathCache
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{
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public:
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enum MathFuncId {
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Zero,
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Sin, Cos, Tan, Sinh, Cosh, Tanh, Asin, Acos, Atan, Asinh, Acosh, Atanh,
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Sqrt, Log, Log10, Log2, Log1p, Exp, Expm1, Cbrt, Trunc, Sign
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};
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private:
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static const unsigned SizeLog2 = 12;
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static const unsigned Size = 1 << SizeLog2;
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struct Entry { double in; MathFuncId id; double out; };
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Entry table[Size];
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public:
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MathCache();
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unsigned hash(double x, MathFuncId id) {
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union { double d; struct { uint32_t one, two; } s; } u = { x };
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uint32_t hash32 = u.s.one ^ u.s.two;
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hash32 += uint32_t(id) << 8;
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uint16_t hash16 = uint16_t(hash32 ^ (hash32 >> 16));
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return (hash16 & (Size - 1)) ^ (hash16 >> (16 - SizeLog2));
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}
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/*
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* N.B. lookup uses double-equality. This is only safe if hash() maps +0
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* and -0 to different table entries, which is asserted in MathCache().
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*/
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double lookup(UnaryFunType f, double x, MathFuncId id) {
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unsigned index = hash(x, id);
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Entry &e = table[index];
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if (e.in == x && e.id == id)
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return e.out;
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e.in = x;
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e.id = id;
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return e.out = f(x);
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}
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size_t sizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
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};
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} /* namespace js */
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/*
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* JS math functions.
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*/
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extern JSObject *
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js_InitMathClass(JSContext *cx, js::HandleObject obj);
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namespace js {
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extern double
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math_random_no_outparam(JSContext *cx);
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extern bool
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math_random(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_abs_handle(JSContext *cx, js::HandleValue v, js::MutableHandleValue r);
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extern bool
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math_abs(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_max(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_min(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_sqrt(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_pow_handle(JSContext *cx, js::HandleValue base, js::HandleValue power,
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js::MutableHandleValue result);
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extern bool
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math_pow(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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minmax_impl(JSContext *cx, bool max, js::HandleValue a, js::HandleValue b,
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js::MutableHandleValue res);
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extern bool
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math_sqrt_handle(JSContext *cx, js::HandleValue number, js::MutableHandleValue result);
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extern bool
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math_imul(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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RoundFloat32(JSContext *cx, HandleValue v, float *out);
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extern bool
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RoundFloat32(JSContext *cx, HandleValue arg, MutableHandleValue res);
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extern bool
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math_fround(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_log(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_log_impl(MathCache *cache, double x);
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extern double
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math_log_uncached(double x);
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extern bool
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math_sin(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_sin_impl(MathCache *cache, double x);
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extern double
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math_sin_uncached(double x);
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extern bool
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math_cos(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_cos_impl(MathCache *cache, double x);
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extern double
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math_cos_uncached(double x);
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extern bool
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math_exp(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_exp_impl(MathCache *cache, double x);
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extern double
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math_exp_uncached(double x);
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extern bool
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math_tan(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_tan_impl(MathCache *cache, double x);
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extern double
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math_tan_uncached(double x);
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extern bool
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math_log10(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_log2(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_log1p(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_expm1(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_cosh(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_sinh(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_tanh(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_acosh(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_asinh(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_atanh(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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ecmaHypot(double x, double y);
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extern bool
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math_hypot(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_trunc(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_sign(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_cbrt(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_asin(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_acos(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_atan(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_atan2_handle(JSContext *cx, HandleValue y, HandleValue x, MutableHandleValue res);
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extern bool
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math_atan2(JSContext *cx, unsigned argc, Value *vp);
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extern double
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ecmaAtan2(double x, double y);
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extern double
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math_atan_impl(MathCache *cache, double x);
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extern double
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math_atan_uncached(double x);
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extern bool
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math_atan(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_asin_impl(MathCache *cache, double x);
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extern double
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math_asin_uncached(double x);
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extern bool
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math_asin(JSContext *cx, unsigned argc, js::Value *vp);
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extern double
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math_acos_impl(MathCache *cache, double x);
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extern double
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math_acos_uncached(double x);
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extern bool
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math_acos(JSContext *cx, unsigned argc, js::Value *vp);
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extern bool
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math_ceil(JSContext *cx, unsigned argc, Value *vp);
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extern double
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math_ceil_impl(double x);
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extern bool
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math_clz32(JSContext *cx, unsigned argc, Value *vp);
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extern bool
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math_floor_handle(JSContext *cx, HandleValue v, MutableHandleValue r);
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extern bool
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math_floor(JSContext *cx, unsigned argc, Value *vp);
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extern double
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math_floor_impl(double x);
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template<typename T>
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extern T GetBiggestNumberLessThan(T x);
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extern bool
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math_round_handle(JSContext *cx, HandleValue arg, MutableHandleValue res);
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extern bool
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math_round(JSContext *cx, unsigned argc, Value *vp);
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extern double
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math_round_impl(double x);
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extern float
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math_roundf_impl(float x);
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extern double
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powi(double x, int y);
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extern double
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ecmaPow(double x, double y);
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extern bool
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math_imul(JSContext *cx, unsigned argc, Value *vp);
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extern double
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math_log10_impl(MathCache *cache, double x);
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extern double
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math_log10_uncached(double x);
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extern double
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math_log2_impl(MathCache *cache, double x);
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extern double
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math_log2_uncached(double x);
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extern double
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math_log1p_impl(MathCache *cache, double x);
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extern double
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math_log1p_uncached(double x);
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extern double
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math_expm1_impl(MathCache *cache, double x);
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extern double
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math_expm1_uncached(double x);
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extern double
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math_cosh_impl(MathCache *cache, double x);
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extern double
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math_cosh_uncached(double x);
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extern double
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math_sinh_impl(MathCache *cache, double x);
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extern double
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math_sinh_uncached(double x);
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extern double
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math_tanh_impl(MathCache *cache, double x);
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extern double
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math_tanh_uncached(double x);
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extern double
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math_acosh_impl(MathCache *cache, double x);
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extern double
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math_acosh_uncached(double x);
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extern double
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math_asinh_impl(MathCache *cache, double x);
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extern double
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math_asinh_uncached(double x);
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extern double
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math_atanh_impl(MathCache *cache, double x);
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extern double
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math_atanh_uncached(double x);
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extern double
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math_trunc_impl(MathCache *cache, double x);
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extern double
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math_trunc_uncached(double x);
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extern double
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math_sign_impl(MathCache *cache, double x);
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extern double
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math_sign_uncached(double x);
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extern double
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math_cbrt_impl(MathCache *cache, double x);
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extern double
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math_cbrt_uncached(double x);
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} /* namespace js */
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#endif /* jsmath_h */
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