Mercurial > mxe-octave
view src/build-msvctools/math/ilogb.S @ 7207:9ed6500e56d3 default tip @
maint: Merge release to default.
author | Markus Mützel <markus.muetzel@gmx.de> |
---|---|
date | Fri, 17 May 2024 20:16:41 +0200 |
parents | f8299bb6c872 |
children |
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/* * Written by J.T. Conklin <jtc@netbsd.org>. * Public domain. */ .file "ilogb.S" .text .align 4 .globl _ilogb .def _ilogb; .scl 2; .type 32; .endef _ilogb: fldl 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