/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/js/jsmath.cpp
C++ | 721 lines | 584 code | 74 blank | 63 comment | 122 complexity | 874c54a9f3986f5c33d8559d8bf47911 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, MPL-2.0-no-copyleft-exception, BSD-3-Clause
- /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- /*
- * JS math package.
- */
- #include "jsstddef.h"
- #include "jslibmath.h"
- #include <stdlib.h>
- #include "jstypes.h"
- #include "jslong.h"
- #include "prmjtime.h"
- #include "jsapi.h"
- #include "jsatom.h"
- #include "jsbuiltins.h"
- #include "jscntxt.h"
- #include "jsversion.h"
- #include "jslock.h"
- #include "jsmath.h"
- #include "jsnum.h"
- #include "jsobj.h"
- extern jsdouble js_NaN;
- #ifndef M_E
- #define M_E 2.7182818284590452354
- #endif
- #ifndef M_LOG2E
- #define M_LOG2E 1.4426950408889634074
- #endif
- #ifndef M_LOG10E
- #define M_LOG10E 0.43429448190325182765
- #endif
- #ifndef M_LN2
- #define M_LN2 0.69314718055994530942
- #endif
- #ifndef M_LN10
- #define M_LN10 2.30258509299404568402
- #endif
- #ifndef M_PI
- #define M_PI 3.14159265358979323846
- #endif
- #ifndef M_SQRT2
- #define M_SQRT2 1.41421356237309504880
- #endif
- #ifndef M_SQRT1_2
- #define M_SQRT1_2 0.70710678118654752440
- #endif
- static JSConstDoubleSpec math_constants[] = {
- {M_E, "E", 0, {0,0,0}},
- {M_LOG2E, "LOG2E", 0, {0,0,0}},
- {M_LOG10E, "LOG10E", 0, {0,0,0}},
- {M_LN2, "LN2", 0, {0,0,0}},
- {M_LN10, "LN10", 0, {0,0,0}},
- {M_PI, "PI", 0, {0,0,0}},
- {M_SQRT2, "SQRT2", 0, {0,0,0}},
- {M_SQRT1_2, "SQRT1_2", 0, {0,0,0}},
- {0,0,0,{0,0,0}}
- };
- JSClass js_MathClass = {
- js_Math_str,
- JSCLASS_HAS_CACHED_PROTO(JSProto_Math),
- JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
- JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
- JSCLASS_NO_OPTIONAL_MEMBERS
- };
- static JSBool
- math_abs(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = fabs(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_acos(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- #if defined(SOLARIS) && defined(__GNUC__)
- if (x < -1 || 1 < x) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- #endif
- z = acos(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_asin(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- #if defined(SOLARIS) && defined(__GNUC__)
- if (x < -1 || 1 < x) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- #endif
- z = asin(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_atan(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = atan(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_atan2(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, y, z;
- if (argc <= 1) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- y = js_ValueToNumber(cx, &vp[3]);
- if (JSVAL_IS_NULL(vp[3]))
- return JS_FALSE;
- #if defined(_MSC_VER)
- /*
- * MSVC's atan2 does not yield the result demanded by ECMA when both x
- * and y are infinite.
- * - The result is a multiple of pi/4.
- * - The sign of x determines the sign of the result.
- * - The sign of y determines the multiplicator, 1 or 3.
- */
- if (JSDOUBLE_IS_INFINITE(x) && JSDOUBLE_IS_INFINITE(y)) {
- z = js_copysign(M_PI / 4, x);
- if (y < 0)
- z *= 3;
- return js_NewDoubleInRootedValue(cx, z, vp);
- }
- #endif
- #if defined(SOLARIS) && defined(__GNUC__)
- if (x == 0) {
- if (JSDOUBLE_IS_NEGZERO(y)) {
- z = js_copysign(M_PI, x);
- return js_NewDoubleInRootedValue(cx, z, vp);
- }
- if (y == 0) {
- z = x;
- return js_NewDoubleInRootedValue(cx, z, vp);
- }
- }
- #endif
- z = atan2(x, y);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_ceil(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = ceil(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_cos(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = cos(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_exp(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- #ifdef _WIN32
- if (!JSDOUBLE_IS_NaN(x)) {
- if (x == *cx->runtime->jsPositiveInfinity) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsPositiveInfinity);
- return JS_TRUE;
- }
- if (x == *cx->runtime->jsNegativeInfinity) {
- *vp = JSVAL_ZERO;
- return JS_TRUE;
- }
- }
- #endif
- z = exp(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_floor(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = floor(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_log(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- #if defined(SOLARIS) && defined(__GNUC__)
- if (x < 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- #endif
- z = log(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_max(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z = *cx->runtime->jsNegativeInfinity;
- jsval *argv;
- uintN i;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNegativeInfinity);
- return JS_TRUE;
- }
- argv = vp + 2;
- for (i = 0; i < argc; i++) {
- x = js_ValueToNumber(cx, &argv[i]);
- if (JSVAL_IS_NULL(argv[i]))
- return JS_FALSE;
- if (JSDOUBLE_IS_NaN(x)) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- if (x == 0 && x == z) {
- if (js_copysign(1.0, z) == -1)
- z = x;
- } else {
- z = (x > z) ? x : z;
- }
- }
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_min(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z = *cx->runtime->jsPositiveInfinity;
- jsval *argv;
- uintN i;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsPositiveInfinity);
- return JS_TRUE;
- }
- argv = vp + 2;
- for (i = 0; i < argc; i++) {
- x = js_ValueToNumber(cx, &argv[i]);
- if (JSVAL_IS_NULL(argv[i]))
- return JS_FALSE;
- if (JSDOUBLE_IS_NaN(x)) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- if (x == 0 && x == z) {
- if (js_copysign(1.0, x) == -1)
- z = x;
- } else {
- z = (x < z) ? x : z;
- }
- }
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_pow(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, y, z;
- if (argc <= 1) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- y = js_ValueToNumber(cx, &vp[3]);
- if (JSVAL_IS_NULL(vp[3]))
- return JS_FALSE;
- /*
- * Because C99 and ECMA specify different behavior for pow(),
- * we need to wrap the libm call to make it ECMA compliant.
- */
- if (!JSDOUBLE_IS_FINITE(y) && (x == 1.0 || x == -1.0)) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- /* pow(x, +-0) is always 1, even for x = NaN. */
- if (y == 0) {
- *vp = JSVAL_ONE;
- return JS_TRUE;
- }
- z = pow(x, y);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- /*
- * Math.random() support, lifted from java.util.Random.java.
- */
- static void
- random_setSeed(JSRuntime *rt, int64 seed)
- {
- int64 tmp;
- JSLL_I2L(tmp, 1000);
- JSLL_DIV(seed, seed, tmp);
- JSLL_XOR(tmp, seed, rt->rngMultiplier);
- JSLL_AND(rt->rngSeed, tmp, rt->rngMask);
- }
- void
- js_random_init(JSRuntime *rt)
- {
- int64 tmp, tmp2;
- /* Do at most once. */
- if (rt->rngInitialized)
- return;
- rt->rngInitialized = JS_TRUE;
- /* rt->rngMultiplier = 0x5DEECE66DL */
- JSLL_ISHL(tmp, 0x5, 32);
- JSLL_UI2L(tmp2, 0xDEECE66DL);
- JSLL_OR(rt->rngMultiplier, tmp, tmp2);
- /* rt->rngAddend = 0xBL */
- JSLL_I2L(rt->rngAddend, 0xBL);
- /* rt->rngMask = (1L << 48) - 1 */
- JSLL_I2L(tmp, 1);
- JSLL_SHL(tmp2, tmp, 48);
- JSLL_SUB(rt->rngMask, tmp2, tmp);
- /* rt->rngDscale = (jsdouble)(1L << 53) */
- JSLL_SHL(tmp2, tmp, 53);
- JSLL_L2D(rt->rngDscale, tmp2);
- /* Finally, set the seed from current time. */
- random_setSeed(rt, PRMJ_Now());
- }
- static uint32
- random_next(JSRuntime *rt, int bits)
- {
- int64 nextseed, tmp;
- uint32 retval;
- JSLL_MUL(nextseed, rt->rngSeed, rt->rngMultiplier);
- JSLL_ADD(nextseed, nextseed, rt->rngAddend);
- JSLL_AND(nextseed, nextseed, rt->rngMask);
- rt->rngSeed = nextseed;
- JSLL_USHR(tmp, nextseed, 48 - bits);
- JSLL_L2I(retval, tmp);
- return retval;
- }
- jsdouble
- js_random_nextDouble(JSRuntime *rt)
- {
- int64 tmp, tmp2;
- jsdouble d;
- JSLL_ISHL(tmp, random_next(rt, 26), 27);
- JSLL_UI2L(tmp2, random_next(rt, 27));
- JSLL_ADD(tmp, tmp, tmp2);
- JSLL_L2D(d, tmp);
- return d / rt->rngDscale;
- }
- static JSBool
- math_random(JSContext *cx, uintN argc, jsval *vp)
- {
- JSRuntime *rt;
- jsdouble z;
- rt = cx->runtime;
- JS_LOCK_RUNTIME(rt);
- js_random_init(rt);
- z = js_random_nextDouble(rt);
- JS_UNLOCK_RUNTIME(rt);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- #if defined _WIN32 && !defined WINCE && _MSC_VER < 1400
- /* Try to work around apparent _copysign bustage in VC6 and VC7. */
- double
- js_copysign(double x, double y)
- {
- jsdpun xu, yu;
- xu.d = x;
- yu.d = y;
- xu.s.hi &= ~JSDOUBLE_HI32_SIGNBIT;
- xu.s.hi |= yu.s.hi & JSDOUBLE_HI32_SIGNBIT;
- return xu.d;
- }
- #endif
- static JSBool
- math_round(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = js_copysign(floor(x + 0.5), x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_sin(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = sin(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_sqrt(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = sqrt(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- static JSBool
- math_tan(JSContext *cx, uintN argc, jsval *vp)
- {
- jsdouble x, z;
- if (argc == 0) {
- *vp = DOUBLE_TO_JSVAL(cx->runtime->jsNaN);
- return JS_TRUE;
- }
- x = js_ValueToNumber(cx, &vp[2]);
- if (JSVAL_IS_NULL(vp[2]))
- return JS_FALSE;
- z = tan(x);
- return js_NewNumberInRootedValue(cx, z, vp);
- }
- #if JS_HAS_TOSOURCE
- static JSBool
- math_toSource(JSContext *cx, uintN argc, jsval *vp)
- {
- *vp = ATOM_KEY(CLASS_ATOM(cx, Math));
- return JS_TRUE;
- }
- #endif
- #ifdef JS_TRACER
- #define MATH_BUILTIN_1(name) \
- static jsdouble FASTCALL math_##name##_tn(jsdouble d) { return name(d); } \
- JS_DEFINE_TRCINFO_1(math_##name, \
- (1, (static, DOUBLE, math_##name##_tn, DOUBLE, 1, 1)))
- MATH_BUILTIN_1(sin)
- MATH_BUILTIN_1(cos)
- MATH_BUILTIN_1(sqrt)
- MATH_BUILTIN_1(floor)
- MATH_BUILTIN_1(ceil)
- static jsdouble FASTCALL
- math_abs_tn(jsdouble d)
- {
- return fabs(d);
- }
- static jsdouble FASTCALL
- math_log_tn(jsdouble d)
- {
- #if defined(SOLARIS) && defined(__GNUC__)
- if (d < 0)
- return js_NaN;
- #endif
- return log(d);
- }
- static jsdouble FASTCALL
- math_max_tn(jsdouble d, jsdouble p)
- {
- if (JSDOUBLE_IS_NaN(d) || JSDOUBLE_IS_NaN(p))
- return js_NaN;
- if (p == 0 && p == d) {
- if (js_copysign(1.0, d) == -1)
- return p;
- return d;
- }
- return (p > d) ? p : d;
- }
- static jsdouble FASTCALL
- math_pow_tn(jsdouble d, jsdouble p)
- {
- if (!JSDOUBLE_IS_FINITE(p) && (d == 1.0 || d == -1.0))
- return js_NaN;
- if (p == 0)
- return 1.0;
- return pow(d, p);
- }
- static jsdouble FASTCALL
- math_random_tn(JSRuntime* rt)
- {
- JS_LOCK_RUNTIME(rt);
- js_random_init(rt);
- jsdouble z = js_random_nextDouble(rt);
- JS_UNLOCK_RUNTIME(rt);
- return z;
- }
- static jsdouble FASTCALL
- math_round_tn(jsdouble x)
- {
- return js_copysign(floor(x + 0.5), x);
- }
- JS_DEFINE_TRCINFO_1(math_abs,
- (1, (static, DOUBLE, math_abs_tn, DOUBLE, 1, 1)))
- JS_DEFINE_TRCINFO_1(math_log,
- (1, (static, DOUBLE, math_log_tn, DOUBLE, 1, 1)))
- JS_DEFINE_TRCINFO_1(math_max,
- (2, (static, DOUBLE, math_max_tn, DOUBLE, DOUBLE, 1, 1)))
- JS_DEFINE_TRCINFO_1(math_pow,
- (2, (static, DOUBLE, math_pow_tn, DOUBLE, DOUBLE, 1, 1)))
- JS_DEFINE_TRCINFO_1(math_random,
- (1, (static, DOUBLE, math_random_tn, RUNTIME, 0, 0)))
- JS_DEFINE_TRCINFO_1(math_round,
- (1, (static, DOUBLE, math_round_tn, DOUBLE, 1, 1)))
- #endif /* JS_TRACER */
- static JSFunctionSpec math_static_methods[] = {
- #if JS_HAS_TOSOURCE
- JS_FN(js_toSource_str, math_toSource, 0, 0),
- #endif
- JS_TN("abs", math_abs, 1, 0, math_abs_trcinfo),
- JS_FN("acos", math_acos, 1, 0),
- JS_FN("asin", math_asin, 1, 0),
- JS_FN("atan", math_atan, 1, 0),
- JS_FN("atan2", math_atan2, 2, 0),
- JS_TN("ceil", math_ceil, 1, 0, math_ceil_trcinfo),
- JS_TN("cos", math_cos, 1, 0, math_cos_trcinfo),
- JS_FN("exp", math_exp, 1, 0),
- JS_TN("floor", math_floor, 1, 0, math_floor_trcinfo),
- JS_TN("log", math_log, 1, 0, math_log_trcinfo),
- JS_TN("max", math_max, 2, 0, math_max_trcinfo),
- JS_FN("min", math_min, 2, 0),
- JS_TN("pow", math_pow, 2, 0, math_pow_trcinfo),
- JS_TN("random", math_random, 0, 0, math_random_trcinfo),
- JS_TN("round", math_round, 1, 0, math_round_trcinfo),
- JS_TN("sin", math_sin, 1, 0, math_sin_trcinfo),
- JS_TN("sqrt", math_sqrt, 1, 0, math_sqrt_trcinfo),
- JS_FN("tan", math_tan, 1, 0),
- JS_FS_END
- };
- JSObject *
- js_InitMathClass(JSContext *cx, JSObject *obj)
- {
- JSObject *Math;
- Math = JS_NewObject(cx, &js_MathClass, NULL, obj);
- if (!Math)
- return NULL;
- if (!JS_DefineProperty(cx, obj, js_Math_str, OBJECT_TO_JSVAL(Math),
- JS_PropertyStub, JS_PropertyStub,
- JSPROP_READONLY | JSPROP_PERMANENT))
- return NULL;
- if (!JS_DefineFunctions(cx, Math, math_static_methods))
- return NULL;
- if (!JS_DefineConstDoubles(cx, Math, math_constants))
- return NULL;
- return Math;
- }