diff options
| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-07-08 14:13:13 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-07-08 14:13:13 +0000 |
| commit | 3d7fa44b05482818a954e04dfb6e5311e1b790b8 (patch) | |
| tree | 67a96027fd2ad2f82122e1946f7d731534b53b84 /win32 | |
| parent | 9487b2cdfc05b6ee0a739676526067daa59e4e4a (diff) | |
win32.c: for strict ANSI
* win32/win32.c (rb_w32_pow): move from win32.h and disable strict
ANSI mode macro to let _controlfp() stuff defined.
[ruby-core:55312] [Bug #8495]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'win32')
| -rw-r--r-- | win32/win32.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/win32/win32.c b/win32/win32.c index c7ee9844b1..ca834c9f5a 100644 --- a/win32/win32.c +++ b/win32/win32.c @@ -19,6 +19,8 @@ Copyright (C) 2000 Information-technology Promotion Agency, Japan */ +#undef __STRICT_ANSI__ + #include "ruby/ruby.h" #include "ruby/encoding.h" #include <fcntl.h> @@ -6954,3 +6956,21 @@ rb_w32_unwrap_io_handle(int fd) } return _close(fd); } + +#if !defined(__MINGW64__) && defined(__MINGW64_VERSION_MAJOR) +/* + * Set floating point precision for pow() of mingw-w64 x86. + * With default precision the result is not proper on WinXP. + */ +double +rb_w32_pow(double x, double y) +{ + double r; + unsigned int default_control = _controlfp(0, 0); + _controlfp(_PC_64, _MCW_PC); + r = pow(x, y); + /* Restore setting */ + _controlfp(default_control, _MCW_PC); + return r; +} +#endif |