diff options
Diffstat (limited to 'lib/msun/i387/s_truncf.S')
| -rw-r--r-- | lib/msun/i387/s_truncf.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/msun/i387/s_truncf.S b/lib/msun/i387/s_truncf.S new file mode 100644 index 0000000..b732908 --- /dev/null +++ b/lib/msun/i387/s_truncf.S @@ -0,0 +1,26 @@ +/* + * Based on code written by J.T. Conklin <jtc@NetBSD.org>. + * Public domain. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$") + +ENTRY(truncf) + pushl %ebp + movl %esp,%ebp + subl $8,%esp + + fstcw -12(%ebp) /* store fpu control word */ + movw -12(%ebp),%dx + orw $0x0c00,%dx /* round towards -oo */ + movw %dx,-16(%ebp) + fldcw -16(%ebp) /* load modfied control word */ + + flds 8(%ebp) /* round */ + frndint + + fldcw -12(%ebp) /* restore original control word */ + + leave + ret |
