Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef jsmath_h
#define jsmath_h
#include <stdint.h>
#include "NamespaceImports.h"
namespace js {
using UnaryMathFunctionType = double (*)(double);
// Used for inlining calls to double => double Math functions from JIT code.
// Note that this list does not include all unary Math functions: abs and sqrt
// for example are missing because the JITs optimize them without a C++ call.
enum class UnaryMathFunction : uint8_t {
SinNative,
SinFdlibm,
CosNative,
CosFdlibm,
TanNative,
TanFdlibm,
Log,
Exp,
ACos,
ASin,
ATan,
Log10,
Log2,
Log1P,
ExpM1,
CosH,
SinH,
TanH,
ACosH,
ASinH,
ATanH,
Trunc,
Cbrt,
Floor,
Ceil,
Round,
};
extern UnaryMathFunctionType GetUnaryMathFunctionPtr(UnaryMathFunction fun);
extern const char* GetUnaryMathFunctionName(UnaryMathFunction fun);
/*
* JS math functions.
*/
extern const JSClass MathClass;
extern uint64_t GenerateRandomSeed();
// Fill |seed[0]| and |seed[1]| with random bits, suitable for
// seeding a XorShift128+ random number generator.
extern void GenerateXorShift128PlusSeed(mozilla::Array<uint64_t, 2>& seed);
extern double math_random_impl(JSContext* cx);
extern double math_abs_impl(double x);
extern bool math_abs(JSContext* cx, unsigned argc, js::Value* vp);
extern double math_max_impl(double x, double y);
extern bool math_max(JSContext* cx, unsigned argc, js::Value* vp);
extern double math_min_impl(double x, double y);
extern bool math_min(JSContext* cx, unsigned argc, js::Value* vp);
extern double math_sqrt_impl(double x);
extern bool math_imul_handle(JSContext* cx, HandleValue lhs, HandleValue rhs,
MutableHandleValue res);
extern bool RoundFloat32(JSContext* cx, HandleValue v, float* out);
extern bool RoundFloat32(JSContext* cx, HandleValue arg,
MutableHandleValue res);
extern double RoundFloat32(double d);
extern double RoundFloat16(double d);
extern double math_log_impl(double x);
extern bool math_use_fdlibm_for_sin_cos_tan();
extern double math_sin_fdlibm_impl(double x);
extern double math_sin_native_impl(double x);
extern double math_cos_fdlibm_impl(double x);
extern double math_cos_native_impl(double x);
extern double math_exp_impl(double x);
extern double math_tan_fdlibm_impl(double x);
extern double math_tan_native_impl(double x);
extern double ecmaHypot(double x, double y);
extern double hypot3(double x, double y, double z);
extern double hypot4(double x, double y, double z, double w);
extern bool math_hypot_handle(JSContext* cx, HandleValueArray args,
MutableHandleValue res);
extern bool math_trunc(JSContext* cx, unsigned argc, Value* vp);
extern double ecmaAtan2(double x, double y);
extern double math_atan_impl(double x);
extern double math_asin_impl(double x);
extern double math_acos_impl(double x);
extern double math_ceil_impl(double x);
extern bool math_floor(JSContext* cx, unsigned argc, Value* vp);
extern double math_floor_impl(double x);
template <typename T>
extern T GetBiggestNumberLessThan(T x);
extern double math_round_impl(double x);
extern float math_roundf_impl(float x);
extern double powi(double x, int32_t y);
extern double ecmaPow(double x, double y);
extern double math_log10_impl(double x);
extern double math_log2_impl(double x);
extern double math_log1p_impl(double x);
extern double math_expm1_impl(double x);
extern double math_cosh_impl(double x);
extern double math_sinh_impl(double x);
extern double math_tanh_impl(double x);
extern double math_acosh_impl(double x);
extern double math_asinh_impl(double x);
extern double math_atanh_impl(double x);
extern double math_trunc_impl(double x);
extern float math_truncf_impl(float x);
extern bool math_sign(JSContext* cx, unsigned argc, Value* vp);
extern double math_sign_impl(double x);
extern double math_cbrt_impl(double x);
} /* namespace js */
#endif /* jsmath_h */