Hi!
When Jonathan posted his libstdc++ patches for the math constants, I've
noticed that the constants in glibc grew up in number of digits since
they were added into libquadmath, apparently through:
https://sourceware.org/ml/libc-alpha/2012-05/msg02040.html
This backports that change to libquadmath.
Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk.
2019-08-02 Jakub Jelinek <ja...@redhat.com>
* quadmath.h (M_Eq, M_LOG2Eq, M_LOG10Eq, M_LN2q, M_LN10q, M_PIq,
M_PI_2q, M_PI_4q, M_1_PIq, M_2_PIq, M_2_SQRTPIq, M_SQRT2q,
M_SQRT1_2q): Use two more decimal places.
--- libquadmath/quadmath.h.jj 2018-11-07 14:44:06.583181795 +0100
+++ libquadmath/quadmath.h 2019-08-01 11:44:57.441735226 +0200
@@ -1,5 +1,5 @@
/* GCC Quad-Precision Math Library
- Copyright (C) 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2010-2019 Free Software Foundation, Inc.
Written by Francois-Xavier Coudert <fxcoud...@gcc.gnu.org>
This file is part of the libquadmath library.
@@ -165,19 +165,19 @@ extern int quadmath_snprintf (char *str,
(floating constant exceeds range of ‘__float128’) */
/* #define HUGE_VALQ (__extension__ 0x1.0p32767Q) */
-#define M_Eq 2.7182818284590452353602874713526625Q /* e */
-#define M_LOG2Eq 1.4426950408889634073599246810018921Q /* log_2 e */
-#define M_LOG10Eq 0.4342944819032518276511289189166051Q /* log_10 e */
-#define M_LN2q 0.6931471805599453094172321214581766Q /* log_e 2 */
-#define M_LN10q 2.3025850929940456840179914546843642Q /* log_e
10 */
-#define M_PIq 3.1415926535897932384626433832795029Q /* pi */
-#define M_PI_2q 1.5707963267948966192313216916397514Q /* pi/2
*/
-#define M_PI_4q 0.7853981633974483096156608458198757Q /* pi/4
*/
-#define M_1_PIq 0.3183098861837906715377675267450287Q /* 1/pi
*/
-#define M_2_PIq 0.6366197723675813430755350534900574Q /* 2/pi
*/
-#define M_2_SQRTPIq 1.1283791670955125738961589031215452Q /* 2/sqrt(pi) */
-#define M_SQRT2q 1.4142135623730950488016887242096981Q /* sqrt(2) */
-#define M_SQRT1_2q 0.7071067811865475244008443621048490Q /* 1/sqrt(2) */
+#define M_Eq 2.718281828459045235360287471352662498Q /* e */
+#define M_LOG2Eq 1.442695040888963407359924681001892137Q /* log_2 e */
+#define M_LOG10Eq 0.434294481903251827651128918916605082Q /* log_10 e */
+#define M_LN2q 0.693147180559945309417232121458176568Q /* log_e 2 */
+#define M_LN10q 2.302585092994045684017991454684364208Q /*
log_e 10 */
+#define M_PIq 3.141592653589793238462643383279502884Q /* pi */
+#define M_PI_2q 1.570796326794896619231321691639751442Q /*
pi/2 */
+#define M_PI_4q 0.785398163397448309615660845819875721Q /*
pi/4 */
+#define M_1_PIq 0.318309886183790671537767526745028724Q /*
1/pi */
+#define M_2_PIq 0.636619772367581343075535053490057448Q /*
2/pi */
+#define M_2_SQRTPIq 1.128379167095512573896158903121545172Q /* 2/sqrt(pi)
*/
+#define M_SQRT2q 1.414213562373095048801688724209698079Q /* sqrt(2) */
+#define M_SQRT1_2q 0.707106781186547524400844362104849039Q /* 1/sqrt(2) */
#define __quadmath_extern_inline \
extern inline __attribute__ ((__gnu_inline__))
Jakub
