diff options
Diffstat (limited to 'mdk-stage1/dietlibc/i386/ilogb.S')
| -rw-r--r-- | mdk-stage1/dietlibc/i386/ilogb.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/ilogb.S b/mdk-stage1/dietlibc/i386/ilogb.S new file mode 100644 index 000000000..3bebd88ba --- /dev/null +++ b/mdk-stage1/dietlibc/i386/ilogb.S @@ -0,0 +1,23 @@ +# +# int ilogb ( double x ); +# +# returns (int) log2 (fabs(x)) for x!=0 +# returns MIN_INT for x==0 +# + +.text +.global ilogb +.type ilogb,@function + +ilogb: + movl 8(%esp),%eax + addl %eax,%eax + jz .Lzero + shrl $21,%eax + subl $1023,%eax + ret + +.Lzero: + stc + rcrl %eax + ret |