diff options
Diffstat (limited to 'mdk-stage1/dietlibc/i386/ipow.S')
-rw-r--r-- | mdk-stage1/dietlibc/i386/ipow.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/ipow.S b/mdk-stage1/dietlibc/i386/ipow.S new file mode 100644 index 000000000..cca6a0ce1 --- /dev/null +++ b/mdk-stage1/dietlibc/i386/ipow.S @@ -0,0 +1,27 @@ +# +# This is not standard, but often you only need such this function +# which is much shorter than the generic pow() function. +# +# double ipow ( double mant, int expo ); +# + +.text +.global ipow +.type ipow,@function + +ipow: fld1 + movl 12(%esp),%ecx + fldl 4(%esp) + and %ecx,%ecx + jns .Lstart + negl %ecx + fdivr %st(1),%st(0) + jmp .Lstart + +.Lnext: fmul %st(0),%st(0) +.Lstart:shrl %ecx + jnc .Lnomul + fmul %st(0),%st(1) +.Lnomul:jnz .Lnext + fcomp + ret |