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* [newlib-cygwin] libm: switch sf_log1p from double error routines to float
@ 2019-12-02 9:05 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2019-12-02 9:05 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=7a526cdc28a3c4acce98e8a99b06562452c90d07
commit 7a526cdc28a3c4acce98e8a99b06562452c90d07
Author: Keith Packard <keithp@keithp.com>
Date: Fri Nov 29 11:23:20 2019 -0800
libm: switch sf_log1p from double error routines to float
sf_log1p was using __math_divzero and __math_invalid, which
drag in a pile of double-precision code. Switch to using the
single-precision variants. This also required making those
available in __OBSOLETE_MATH mode.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diff:
---
newlib/libm/common/math_errf.c | 2 --
newlib/libm/common/sf_log1p.c | 4 ++--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/newlib/libm/common/math_errf.c b/newlib/libm/common/math_errf.c
index 762fc27..53c68b1 100644
--- a/newlib/libm/common/math_errf.c
+++ b/newlib/libm/common/math_errf.c
@@ -75,7 +75,6 @@ __math_oflowf (uint32_t sign)
return xflowf (sign, 0x1p97f);
}
-#if !__OBSOLETE_MATH
HIDDEN float
__math_divzerof (uint32_t sign)
{
@@ -89,4 +88,3 @@ __math_invalidf (float x)
float y = (x - x) / (x - x);
return isnan (x) ? y : with_errnof (y, EDOM);
}
-#endif /* !__OBSOLETE_MATH */
diff --git a/newlib/libm/common/sf_log1p.c b/newlib/libm/common/sf_log1p.c
index d867680..d326e00 100644
--- a/newlib/libm/common/sf_log1p.c
+++ b/newlib/libm/common/sf_log1p.c
@@ -56,9 +56,9 @@ static float zero = 0.0;
if (hx < 0x3ed413d7) { /* x < 0.41422 */
if(ax>=0x3f800000) { /* x <= -1.0 */
if(x==(float)-1.0)
- return __math_divzero (1); /* log1p(-1)=-inf */
+ return __math_divzerof (1); /* log1p(-1)=-inf */
else
- return __math_invalid (x); /* log1p(x<-1)=NaN */
+ return __math_invalidf (x); /* log1p(x<-1)=NaN */
}
if(ax<0x31000000) { /* |x| < 2**-29 */
if(two25+x>zero /* raise inexact */
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2019-12-02 9:05 [newlib-cygwin] libm: switch sf_log1p from double error routines to float Corinna Vinschen
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