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| 1 /* | |
| 2 * Copyright 2007-2008 the V8 project authors. All rights reserved. | |
| 3 * Redistribution and use in source and binary forms, with or without | |
| 4 * modification, are permitted provided that the following conditions are | |
| 5 * met: | |
| 6 * | |
| 7 * * Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * * Redistributions in binary form must reproduce the above | |
| 10 * copyright notice, this list of conditions and the following | |
| 11 * disclaimer in the documentation and/or other materials provided | |
| 12 * with the distribution. | |
| 13 * * Neither the name of Google Inc. nor the names of its | |
| 14 * contributors may be used to endorse or promote products derived | |
| 15 * from this software without specific prior written permission. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 /** | |
| 31 * Dtoa needs to have a particular environment set up for it so | |
| 32 * instead of using it directly you should use this file. | |
| 33 * | |
| 34 * The way it works is that when you link with it, its definitions | |
| 35 * of dtoa, strtod etc. override the default ones. So if you fail | |
| 36 * to link with this library everything will still work, it's just | |
| 37 * subtly wrong. | |
| 38 */ | |
| 39 | |
| 40 #if !(defined(__APPLE__) && defined(__MACH__)) && \ | |
| 41 !defined(WIN32) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && \ | |
| 42 !defined(__sun) | |
| 43 #include <endian.h> | |
| 44 #endif | |
| 45 #include <math.h> | |
| 46 #include <float.h> | |
| 47 | |
| 48 /* The floating point word order on ARM is big endian when floating point | |
| 49 * emulation is used, even if the byte order is little endian */ | |
| 50 #if !(defined(__APPLE__) && defined(__MACH__)) && !defined(WIN32) && \ | |
| 51 !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__sun) && \ | |
| 52 __FLOAT_WORD_ORDER == __BIG_ENDIAN | |
| 53 #define IEEE_MC68k | |
| 54 #else | |
| 55 #define IEEE_8087 | |
| 56 #endif | |
| 57 | |
| 58 #define __MATH_H__ | |
| 59 #if defined(__APPLE__) && defined(__MACH__) || defined(__FreeBSD__) || \ | |
| 60 defined(__OpenBSD__) || defined(__sun) | |
| 61 /* stdlib.h on FreeBSD and Apple's 10.5 and later SDKs will mangle the | |
| 62 * name of strtod. If it's included after strtod is redefined as | |
| 63 * gay_strtod, it will mangle the name of gay_strtod, which is | |
| 64 * unwanted. */ | |
| 65 #include <stdlib.h> | |
| 66 | |
| 67 #endif | |
| 68 /* stdlib.h on Windows adds __declspec(dllimport) to all functions when using | |
| 69 * the DLL version of the CRT (compiling with /MD or /MDd). If stdlib.h is | |
| 70 * included after strtod is redefined as gay_strtod, it will add | |
| 71 * __declspec(dllimport) to gay_strtod, which causes the compilation of | |
| 72 * gay_strtod in dtoa.c to fail. | |
| 73 */ | |
| 74 #if defined(WIN32) && defined(_DLL) | |
| 75 #include "stdlib.h" | |
| 76 #endif | |
| 77 | |
| 78 /* For MinGW, turn on __NO_ISOCEXT so that its strtod doesn't get added */ | |
| 79 #ifdef __MINGW32__ | |
| 80 #define __NO_ISOCEXT | |
| 81 #endif /* __MINGW32__ */ | |
| 82 | |
| 83 /* On 64-bit systems, we need to make sure that a Long is only 32 bits. */ | |
| 84 #ifdef V8_TARGET_ARCH_X64 | |
| 85 #define Long int | |
| 86 #endif /* V8_TARGET_ARCH_X64 */ | |
| 87 | |
| 88 /* Make sure we use the David M. Gay version of strtod(). On Linux, we | |
| 89 * cannot use the same name (maybe the function does not have weak | |
| 90 * linkage?). */ | |
| 91 #define strtod gay_strtod | |
| 92 #include "third_party/dtoa/dtoa.c" | |
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