diff options
Diffstat (limited to 'src/math/x86_64/modfl.s')
| -rw-r--r-- | src/math/x86_64/modfl.s | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/math/x86_64/modfl.s b/src/math/x86_64/modfl.s new file mode 100644 index 00000000..cd2ec46e --- /dev/null +++ b/src/math/x86_64/modfl.s @@ -0,0 +1,27 @@ +.global modfl +.type modfl,@function +modfl: + fldt 8(%rsp) + fxam + fnstsw %ax + sahf + jnp 1f + jc 2f +1: fld1 + fld %st(1) +1: fprem + fnstsw %ax + sahf + jp 1b + fstp %st(1) + fsubr %st(0),%st(1) + fxch %st(1) + fstpt (%rdi) + ret + +2: fstpt (%rdi) + mov 6(%rdi),%eax + and $0x80000000,%eax + mov %eax,8(%rsp) + flds 8(%rsp) + ret |