From dc8971488e7c174ab4084cbdb0a8f12c39b738d7 Mon Sep 17 00:00:00 2001 From: Danny Smith Date: Thu, 13 Jun 2002 10:20:48 +0000 Subject: * include/_mingw.h: Increment version to 2.0. * Makefile.in: Ditto. Merge in mingwex branch. --- winsup/mingw/mingwex/trunc.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 winsup/mingw/mingwex/trunc.c (limited to 'winsup/mingw/mingwex/trunc.c') diff --git a/winsup/mingw/mingwex/trunc.c b/winsup/mingw/mingwex/trunc.c new file mode 100644 index 000000000..2b9931255 --- /dev/null +++ b/winsup/mingw/mingwex/trunc.c @@ -0,0 +1,17 @@ +#include +#include + +double +trunc (double _x){ + double retval; + unsigned short saved_cw; + __asm__ ("fnstcw %0;": "=m" (saved_cw)); /* save FPU control word */ + __asm__ ("fldcw %0;" + : + : "m" ((saved_cw & ~(FE_TONEAREST | FE_DOWNWARD | FE_UPWARD + | FE_TOWARDZERO)) | FE_TOWARDZERO) + ); + __asm__ ("frndint;" : "=t" (retval) : "0" (_x)); /* round towards zero */ + __asm__ ("fldcw %0;" : : "m" (saved_cw) ); /* restore saved control word */ + return retval; +} -- cgit v1.2.3