From: nsz <nsz@port70.net>
Date: Tue, 13 Mar 2012 04:52:37 +0000 (+0100)
Subject: use different const in __expo2
X-Git-Url: http://nsz.repo.hu/git/?p=libm;a=commitdiff_plain;h=4a1a5bbeb8516d59f7c964d1b7e744ef90b36c79;hp=5b0b42043c70ae677322aba55af6558eb2db6bb8

use different const in __expo2
---

diff --git a/src/math/__expo2.c b/src/math/__expo2.c
index 61ae7fd..7009306 100644
--- a/src/math/__expo2.c
+++ b/src/math/__expo2.c
@@ -1,10 +1,10 @@
 #include "libm.h"
 
-/* k minimizes |exp(k ln2) - 2**k|, see cmath/__cexp.c */
-static const uint32_t k = 1799;
-static const double kln2 = 1246.97177782734161156;
+/* k is such that k*ln2 has minimal error */
+static const uint32_t k = 2043;
+static const double kln2 = 0x1.62066151add8bp+10;
 
-/* exp(x)/2 for large x */
+/* exp(x)/2 when x >= log(DBL_MAX) */
 double __expo2(double x)
 {
 	double scale;
diff --git a/src/math/__expo2f.c b/src/math/__expo2f.c
index d35f440..7e61ba7 100644
--- a/src/math/__expo2f.c
+++ b/src/math/__expo2f.c
@@ -1,6 +1,6 @@
 #include "libm.h"
 
-/* k minimizes |exp(k ln2) - 2**k|, see cmath/__cexpf.c */
+/* k is such that k*ln2 has minimal error */
 static const uint32_t k = 235;
 static const float kln2 = 162.88958740f;