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| author | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
|---|---|---|
| committer | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
| commit | 43b55bace5fad27af5da7a99784667363b92c45d (patch) | |
| tree | 17fe82f6ba0d93b76d10dd73d4945ab81b69db40 /newlib/libc/machine/i386/f_ldexp.S | |
| parent | 8dabd7496a9eeaca2a7180c0a176059ba9229bb2 (diff) | |
| download | gdb-43b55bace5fad27af5da7a99784667363b92c45d.tar.gz | |
import newlib-2000-02-17 snapshotnewlib-2000-02-17SNAPSHOT
Diffstat (limited to 'newlib/libc/machine/i386/f_ldexp.S')
| -rw-r--r-- | newlib/libc/machine/i386/f_ldexp.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/newlib/libc/machine/i386/f_ldexp.S b/newlib/libc/machine/i386/f_ldexp.S new file mode 100644 index 00000000000..8a877193f30 --- /dev/null +++ b/newlib/libc/machine/i386/f_ldexp.S @@ -0,0 +1,33 @@ +/* + * ==================================================== + * Copyright (C) 1998 by Cygnus Solutions. All rights reserved. + * + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* +Fast version of ldexp using Intel float instructions. + + double _f_ldexp (double x, int exp); + +Function calculates x * 2 ** exp. +There is no error checking or setting of errno. +*/ + + #include "i386mach.h" + + .global SYM (_f_ldexp) + +SYM (_f_ldexp): + pushl ebp + movl esp,ebp + fild 16(ebp) + fldl 8(ebp) + fscale + fstp st1 + + leave + ret |