| 0,0 → 1,36 |
|---|
| /* |
| * Written by J.T. Conklin <jtc@netbsd.org>. |
| * Changes for long double by Ulrich Drepper <drepper@cygnus.com> |
| * Public domain. |
| */ |
| |
| .file "ilogbl.S" |
| .text |
| .align 4 |
| .globl _ilogbl |
| .def _ilogbl; .scl 2; .type 32; .endef |
| _ilogbl: |
| fldt 4(%esp) |
| /* I added the following ugly construct because ilogb(+-Inf) is |
| required to return INT_MAX in ISO C99. |
| -- jakub@redhat.com. */ |
| fxam /* Is NaN or +-Inf? */ |
| fstsw %ax |
| movb $0x45, %dh |
| andb %ah, %dh |
| cmpb $0x05, %dh |
| je 1f /* Is +-Inf, jump. */ |
| |
| fxtract |
| pushl %eax |
| fstp %st |
| |
| fistpl (%esp) |
| fwait |
| popl %eax |
| |
| ret |
| |
| 1: fstp %st |
| movl $0x7fffffff, %eax |
| ret |