diff options
Diffstat (limited to 'winsup/mingw/mingwex/fesetenv.c')
-rw-r--r-- | winsup/mingw/mingwex/fesetenv.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/winsup/mingw/mingwex/fesetenv.c b/winsup/mingw/mingwex/fesetenv.c deleted file mode 100644 index 105a0af10..000000000 --- a/winsup/mingw/mingwex/fesetenv.c +++ /dev/null @@ -1,57 +0,0 @@ -#include <fenv.h> -#include <float.h> -#include "cpu_features.h" - -/* 7.6.4.3 - The fesetenv function establishes the floating-point environment - represented by the object pointed to by envp. The argument envp - points to an object set by a call to fegetenv or feholdexcept, or - equal the macro FE_DFL_ENV or an implementation-defined environment - macro. Note that fesetenv merely installs the state of the exception - flags represented through its argument, and does not raise these - exceptions. - */ - -extern void (*_imp___fpreset)( void ) ; - -int fesetenv (const fenv_t * envp) -{ - /* Default mxcsr status is to mask all exceptions. All other bits - are zero. */ - - unsigned int _csr = FE_ALL_EXCEPT << __MXCSR_EXCEPT_MASK_SHIFT /*= 0x1f80 */; - - if (envp == FE_PC64_ENV) - /* - * fninit initializes the control register to 0x37f, - * the status register to zero and the tag word to 0FFFFh. - * The other registers are unaffected. - */ - __asm__ ("fninit"); - - else if (envp == FE_PC53_ENV) - /* - * MS _fpreset() does same *except* it sets control word - * to 0x27f (53-bit precison). - * We force calling _fpreset in msvcrt.dll - */ - - (*_imp___fpreset)(); - - else if (envp == FE_DFL_ENV) - /* Use the choice made at app startup */ - _fpreset(); - - else - { - __asm__ ("fldenv %0;" : : "m" (*envp)); - /* Setting the reserved high order bits of MXCSR causes a segfault */ - _csr = envp ->__mxcsr & 0xffff; - } - - /* Set MXCSR */ - if (__HAS_SSE) - __asm__ volatile ("ldmxcsr %0" : : "m" (_csr)); - - return 0; -} |