diff options
Diffstat (limited to 'lib/libc/arch/sparc/gen/fpsetround.c')
-rw-r--r-- | lib/libc/arch/sparc/gen/fpsetround.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/libc/arch/sparc/gen/fpsetround.c b/lib/libc/arch/sparc/gen/fpsetround.c new file mode 100644 index 00000000000..924509bcaa9 --- /dev/null +++ b/lib/libc/arch/sparc/gen/fpsetround.c @@ -0,0 +1,24 @@ +/* + * Written by J.T. Conklin, Apr 10, 1995 + * Public domain. + */ + +#include <ieeefp.h> + +fp_rnd +fpsetround(rnd_dir) + fp_rnd rnd_dir; +{ + fp_rnd old; + fp_rnd new; + + __asm__("st %%fsr,%0" : "=m" (*&old)); + + new = old; + new &= ~(0x03 << 30); + new |= ((rnd_dir & 0x03) << 30); + + __asm__("ld %0,%%fsr" : : "m" (*&new)); + + return (old >> 30) & 0x03; +} |