Add m-esr52 at 52.6.0

1 files changed, 437 insertions, 0 deletions

diff --git a/js/src/jsmath.h b/js/src/jsmath.h
new file mode 100644
index 000000000..309590682
--- /dev/null
+++ b/js/src/jsmath.h
@@ -0,0 +1,437 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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 "mozilla/MemoryReporting.h"
+
+#include <cmath>
+
+#include "NamespaceImports.h"
+
+namespace js {
+
+typedef double (*UnaryFunType)(double);
+
+class MathCache
+{
+  public:
+    enum MathFuncId {
+        Zero,
+        Sin, Cos, Tan, Sinh, Cosh, Tanh, Asin, Acos, Atan, Asinh, Acosh, Atanh,
+        Sqrt, Log, Log10, Log2, Log1p, Exp, Expm1, Cbrt, Trunc, Sign
+    };
+
+  private:
+    static const unsigned SizeLog2 = 12;
+    static const unsigned Size = 1 << SizeLog2;
+    struct Entry { double in; MathFuncId id; double out; };
+    Entry table[Size];
+
+  public:
+    MathCache();
+
+    unsigned hash(double x, MathFuncId id) {
+        union { double d; struct { uint32_t one, two; } s; } u = { x };
+        uint32_t hash32 = u.s.one ^ u.s.two;
+        hash32 += uint32_t(id) << 8;
+        uint16_t hash16 = uint16_t(hash32 ^ (hash32 >> 16));
+        return (hash16 & (Size - 1)) ^ (hash16 >> (16 - SizeLog2));
+    }
+
+    /*
+     * N.B. lookup uses double-equality. This is only safe if hash() maps +0
+     * and -0 to different table entries, which is asserted in MathCache().
+     */
+    double lookup(UnaryFunType f, double x, MathFuncId id) {
+        unsigned index = hash(x, id);
+        Entry& e = table[index];
+        if (e.in == x && e.id == id)
+            return e.out;
+        e.in = x;
+        e.id = id;
+        return e.out = f(x);
+    }
+
+    bool isCached(double x, MathFuncId id, double *r, unsigned *index) {
+        *index = hash(x, id);
+        Entry& e = table[*index];
+        if (e.in == x && e.id == id) {
+            *r = e.out;
+            return true;
+        }
+        return false;
+    }
+
+    void store(MathFuncId id, double x, double v, unsigned index) {
+        Entry &e = table[index];
+        if (e.in == x && e.id == id)
+            return;
+        e.in = x;
+        e.id = id;
+        e.out = v;
+    }
+
+    size_t sizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf);
+};
+
+/*
+ * JS math functions.
+ */
+
+extern JSObject*
+InitMathClass(JSContext* cx, HandleObject obj);
+
+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 uint64_t
+random_next(uint64_t* rngState, int bits);
+
+extern double
+math_random_impl(JSContext* cx);
+
+extern bool
+math_random(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_abs_handle(JSContext* cx, js::HandleValue v, js::MutableHandleValue r);
+
+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 bool
+math_sqrt(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_pow_handle(JSContext* cx, js::HandleValue base, js::HandleValue power,
+                js::MutableHandleValue result);
+
+extern bool
+math_pow(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+minmax_impl(JSContext* cx, bool max, js::HandleValue a, js::HandleValue b,
+            js::MutableHandleValue res);
+
+extern void
+math_sincos_uncached(double x, double *sin, double *cos);
+
+extern void
+math_sincos_impl(MathCache* mathCache, double x, double *sin, double *cos);
+
+extern bool
+math_sqrt_handle(JSContext* cx, js::HandleValue number, js::MutableHandleValue result);
+
+extern bool
+math_imul_handle(JSContext* cx, HandleValue lhs, HandleValue rhs, MutableHandleValue res);
+
+extern bool
+math_imul(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+RoundFloat32(JSContext* cx, HandleValue v, float* out);
+
+extern bool
+RoundFloat32(JSContext* cx, HandleValue arg, MutableHandleValue res);
+
+extern bool
+math_fround(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_log(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_log_impl(MathCache* cache, double x);
+
+extern double
+math_log_uncached(double x);
+
+extern bool
+math_log_handle(JSContext* cx, HandleValue val, MutableHandleValue res);
+
+extern bool
+math_sin(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_sin_impl(MathCache* cache, double x);
+
+extern double
+math_sin_uncached(double x);
+
+extern bool
+math_sin_handle(JSContext* cx, HandleValue val, MutableHandleValue res);
+
+extern bool
+math_cos(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_cos_impl(MathCache* cache, double x);
+
+extern double
+math_cos_uncached(double x);
+
+extern bool
+math_exp(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_exp_impl(MathCache* cache, double x);
+
+extern double
+math_exp_uncached(double x);
+
+extern bool
+math_tan(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_tan_impl(MathCache* cache, double x);
+
+extern double
+math_tan_uncached(double x);
+
+extern bool
+math_log10(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_log2(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_log1p(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_expm1(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_cosh(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_sinh(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_tanh(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_acosh(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_asinh(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_atanh(JSContext* cx, unsigned argc, js::Value* vp);
+
+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(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_hypot_handle(JSContext* cx, HandleValueArray args, MutableHandleValue res);
+
+extern bool
+math_trunc(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_sign(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_cbrt(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_asin(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_acos(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_atan(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_atan2_handle(JSContext* cx, HandleValue y, HandleValue x, MutableHandleValue res);
+
+extern bool
+math_atan2(JSContext* cx, unsigned argc, Value* vp);
+
+extern double
+ecmaAtan2(double x, double y);
+
+extern double
+math_atan_impl(MathCache* cache, double x);
+
+extern double
+math_atan_uncached(double x);
+
+extern bool
+math_atan(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_asin_impl(MathCache* cache, double x);
+
+extern double
+math_asin_uncached(double x);
+
+extern bool
+math_asin(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern double
+math_acos_impl(MathCache* cache, double x);
+
+extern double
+math_acos_uncached(double x);
+
+extern bool
+math_acos(JSContext* cx, unsigned argc, js::Value* vp);
+
+extern bool
+math_ceil_handle(JSContext* cx, HandleValue value, MutableHandleValue res);
+
+extern bool
+math_ceil(JSContext* cx, unsigned argc, Value* vp);
+
+extern double
+math_ceil_impl(double x);
+
+extern bool
+math_clz32(JSContext* cx, unsigned argc, Value* vp);
+
+extern bool
+math_floor_handle(JSContext* cx, HandleValue v, MutableHandleValue r);
+
+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 bool
+math_round_handle(JSContext* cx, HandleValue arg, MutableHandleValue res);
+
+extern bool
+math_round(JSContext* cx, unsigned argc, Value* vp);
+
+extern double
+math_round_impl(double x);
+
+extern float
+math_roundf_impl(float x);
+
+extern double
+powi(double x, int y);
+
+extern double
+ecmaPow(double x, double y);
+
+extern bool
+math_imul(JSContext* cx, unsigned argc, Value* vp);
+
+extern double
+math_log10_impl(MathCache* cache, double x);
+
+extern double
+math_log10_uncached(double x);
+
+extern double
+math_log2_impl(MathCache* cache, double x);
+
+extern double
+math_log2_uncached(double x);
+
+extern double
+math_log1p_impl(MathCache* cache, double x);
+
+extern double
+math_log1p_uncached(double x);
+
+extern double
+math_expm1_impl(MathCache* cache, double x);
+
+extern double
+math_expm1_uncached(double x);
+
+extern double
+math_cosh_impl(MathCache* cache, double x);
+
+extern double
+math_cosh_uncached(double x);
+
+extern double
+math_sinh_impl(MathCache* cache, double x);
+
+extern double
+math_sinh_uncached(double x);
+
+extern double
+math_tanh_impl(MathCache* cache, double x);
+
+extern double
+math_tanh_uncached(double x);
+
+extern double
+math_acosh_impl(MathCache* cache, double x);
+
+extern double
+math_acosh_uncached(double x);
+
+extern double
+math_asinh_impl(MathCache* cache, double x);
+
+extern double
+math_asinh_uncached(double x);
+
+extern double
+math_atanh_impl(MathCache* cache, double x);
+
+extern double
+math_atanh_uncached(double x);
+
+extern double
+math_trunc_impl(MathCache* cache, double x);
+
+extern double
+math_trunc_uncached(double x);
+
+extern double
+math_sign_impl(MathCache* cache, double x);
+
+extern double
+math_sign_uncached(double x);
+
+extern double
+math_cbrt_impl(MathCache* cache, double x);
+
+extern double
+math_cbrt_uncached(double x);
+
+} /* namespace js */
+
+#endif /* jsmath_h */