blob: f6a6cb803c186d08d738d71b40b07d4868d2b541 [file] [log] [blame]
/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the w64 mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER within this package.
*/
.file "ilogbf.S"
.text
.align 4
.globl _ilogbf
.def _ilogbf; .scl 2; .type 32; .endef
_ilogbf:
movss %xmm0,-12(%rsp)
flds -12(%rsp)
fxam /* Is NaN or +-Inf? */
fstsw %ax
movb $0x45, %dh
andb %ah, %dh
cmpb $0x05, %dh
je 1f /* Is +-Inf, jump. */
fxtract
pushq %rax
fstp %st
fistpl (%rsp)
fwait
popq %rax
ret
1: fstp %st
movl $0x7fffffff, %eax
ret