libc/newlib/libc/machine/i386/f_log10.S
Jeff Johnston 348c5e06c2 2001-08-29 Joel Sherrill <joel@OARcorp.com>
* libc/include/sys/unistd.h: Prototype chroot() for RTEMS.

2001-08-29  Ralf Corsepius <corsepiu@faw.uni-ulm.de>

        * libc/machine/i386/f_atan2.S, libc/machine/i386/f_atan2f.S,
          libc/machine/i386/f_exp.c, libc/machine/i386/f_expf.c,
          libc/machine/i386/f_frexp.S, libc/machine/i386/f_frexpf.S,
          libc/machine/i386/f_ldexp.S, libc/machine/i386/f_ldexpf.S,
          libc/machine/i386/f_log.S, libc/machine/i386/f_log10.S,
          libc/machine/i386/f_log10f.S, libc/machine/i386/f_logf.S,
          libc/machine/i386/f_pow.c, libc/machine/i386/f_powf.c,
          libc/machine/i386/f_tan.S, libc/machine/i386/f_tanf.S:
        Add conditional compilation to avoid HW FPU instructions
        when compiled for soft-float.
2001-08-29 20:09:31 +00:00

41 lines
734 B
ArmAsm

/*
* ====================================================
* 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.
* ====================================================
*/
#if !defined(_SOFT_FLOAT)
/*
Fast version of log10 using Intel float instructions.
double _f_log10 (double x);
Function calculates the log base 10 of x.
There is no error checking or setting of errno.
*/
#include "i386mach.h"
.global SYM (_f_log10)
SOTYPE_FUNCTION(_f_log10)
SYM (_f_log10):
pushl ebp
movl esp,ebp
fld1
fldl2t
fdivrp
fldl 8(ebp)
fyl2x
leave
ret
#endif