diff options
Diffstat (limited to 'winsup/mingw/mingwex/math/floorf.S')
-rw-r--r-- | winsup/mingw/mingwex/math/floorf.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/math/floorf.S b/winsup/mingw/mingwex/math/floorf.S new file mode 100644 index 000000000..8ae8100a7 --- /dev/null +++ b/winsup/mingw/mingwex/math/floorf.S @@ -0,0 +1,35 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + * + * Changes for long double by Ulrich Drepper <drepper@cygnus.com> + * + * Removed header file dependency for use in libmingwex.a by + * Danny Smith <dannysmith@users.sourceforge.net> + */ + .file "floorf.S" + .text + .align 4 +.globl _floorf + .def _floorf; .scl 2; .type 32; .endef +_floorf: + flds 4(%esp) + subl $8,%esp + + fstcw 4(%esp) /* store fpu control word */ + + /* We use here %edx although only the low 1 bits are defined. + But none of the operations should care and they are faster + than the 16 bit operations. */ + movl $0x400,%edx /* round towards -oo */ + orl 4(%esp),%edx + andl $0xf7ff,%edx + movl %edx,(%esp) + fldcw (%esp) /* load modified control word */ + + frndint /* round */ + + fldcw 4(%esp) /* restore original control word */ + + addl $8,%esp + ret |