1 files changed, 172 insertions, 0 deletions
diff --git a/js/src/jsmath.h b/js/src/jsmath.h
new file mode 100644
index 0000000000..eaa9761d06
--- /dev/null
+++ b/js/src/jsmath.h
@@ -0,0 +1,172 @@
+/* -*- 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#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 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 double math_sign_impl(double x);
+
+extern double math_cbrt_impl(double x);
+
+} /* namespace js */
+
+#endif /* jsmath_h */