4694cc18c2
* Makefile.in: Add libmsvcr90.a and libmsvcr90d.a targets.
* msvcrt.def.in: Add support for __msvcr90__ and __msvcr90d__ defines.
* mingwex/math/log10f.S: Correct issue with comments.
* mingwex/math/log10l.S: Ditto.
* mingwex/math/log1p.S: Ditto.
* mingwex/math/log1pf.S: Ditto.
* mingwex/math/log1pl.S: Ditto.
* mingwex/math/log2.S: Ditto.
* mingwex/math/log2f.S: Ditto.
* mingwex/math/log2l.S: Ditto.
* mingwex/math/logf.S: Ditto.
* mingwex/math/logl.S: Ditto.
55 lines
1.0 KiB
ArmAsm
55 lines
1.0 KiB
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*
|
|
* Adapted 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 "log1pl.S"
|
|
.text
|
|
.align 4
|
|
/* The fyl2xp1 can only be used for values in
|
|
-1 + sqrt(2) / 2 <= x <= 1 - sqrt(2) / 2
|
|
0.29 is a safe value.
|
|
*/
|
|
limit: .tfloat 0.29
|
|
/* Please note: we use a double value here. Since 1.0 has
|
|
an exact representation this does not effect the accuracy
|
|
but it helps to optimize the code. */
|
|
one: .double 1.0
|
|
|
|
/*
|
|
* Use the fyl2xp1 function when the argument is in the range -0.29 to 0.29,
|
|
* otherwise fyl2x with the needed extra computation.
|
|
*/
|
|
.globl _log1pl;
|
|
.def _log1pl; .scl 2; .type 32; .endef
|
|
_log1pl:
|
|
fldln2
|
|
fldt 4(%esp)
|
|
fxam
|
|
fnstsw
|
|
fld %st
|
|
sahf
|
|
jc 3f /* in case x is NaN or ±Inf */
|
|
4:
|
|
fabs
|
|
fldt limit
|
|
fcompp
|
|
fnstsw
|
|
sahf
|
|
jnc 2f
|
|
faddl one
|
|
fyl2x
|
|
ret
|
|
|
|
2: fyl2xp1
|
|
ret
|
|
|
|
3: jp 4b /* in case x is ±Inf */
|
|
fstp %st(1)
|
|
fstp %st(1)
|
|
ret
|