Added patch to calculate msvcrt exponential math operations with higher precision.

patches/msvcrt-Math_Precision/0001-msvcrt-Calculate-sinh-cosh-exp-pow-with-higher-preci.patch

@@ -0,0 +1,117 @@
+From af8345987e58c2a5e6df44590e677a65ca71594c Mon Sep 17 00:00:00 2001
+From: Sebastian Lackner <sebastian@fds-team.de>
+Date: Fri, 10 Apr 2015 07:51:16 +0200
+Subject: msvcrt: Calculate sinh/cosh/exp/pow with higher precision.
+
+Based on a patch by Zheng Chen.
+---
+ configure.ac       | 32 ++++++++++++++++++++++++++++++++
+ dlls/msvcrt/math.c | 21 +++++++++++++++++----
+ 2 files changed, 49 insertions(+), 4 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 688ab26..30e8ef2 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -2586,6 +2586,38 @@ then
+     AC_DEFINE(HAVE_ISNAN, 1, [Define to 1 if you have the `isnan' function.])
+ fi
+ 
++dnl Check for coshl
++AC_CACHE_CHECK([for coshl], ac_cv_have_coshl,
++               AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[float f = 0.0; return coshl(f)]])],[ac_cv_have_coshl="yes"],[ac_cv_have_coshl="no"]))
++if test "$ac_cv_have_coshl" = "yes"
++then
++    AC_DEFINE(HAVE_COSHL, 1, [Define to 1 if you have the `coshl' function.])
++fi
++
++dnl Check for sinhl
++AC_CACHE_CHECK([for sinhl], ac_cv_have_sinhl,
++               AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[float f = 0.0; return sinhl(f)]])],[ac_cv_have_sinhl="yes"],[ac_cv_have_sinhl="no"]))
++if test "$ac_cv_have_sinhl" = "yes"
++then
++    AC_DEFINE(HAVE_SINHL, 1, [Define to 1 if you have the `sinhl' function.])
++fi
++
++dnl Check for expl
++AC_CACHE_CHECK([for expl], ac_cv_have_expl,
++               AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[float f = 0.0; return expl(f)]])],[ac_cv_have_expl="yes"],[ac_cv_have_expl="no"]))
++if test "$ac_cv_have_expl" = "yes"
++then
++    AC_DEFINE(HAVE_EXPL, 1, [Define to 1 if you have the `expl' function.])
++fi
++
++dnl Check for powl
++AC_CACHE_CHECK([for powl], ac_cv_have_powl,
++               AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[float f = 0.0; return powl(f, f)]])],[ac_cv_have_powl="yes"],[ac_cv_have_powl="no"]))
++if test "$ac_cv_have_powl" = "yes"
++then
++    AC_DEFINE(HAVE_POWL, 1, [Define to 1 if you have the `powl' function.])
++fi
++
+ AC_CHECK_FUNCS(\
+ 	cbrt \
+ 	cbrtf \
+diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
+index 7c971d3..d48199e 100644
+--- a/dlls/msvcrt/math.c
++++ b/dlls/msvcrt/math.c
+@@ -51,6 +51,19 @@ WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
+ #define signbit(x) ((x) < 0)
+ #endif
+ 
++#ifndef HAVE_COSHL
++#define coshl(x) cosh(x)
++#endif
++#ifndef HAVE_SINHL
++#define sinhl(x) sinh(x)
++#endif
++#ifndef HAVE_EXPL
++#define expl(x) exp(x)
++#endif
++#ifndef HAVE_POWL
++#define powl(x,y) pow(x,y)
++#endif
++
+ typedef int (CDECL *MSVCRT_matherr_func)(struct MSVCRT__exception *);
+ typedef double LDOUBLE;  /* long double is just a double */
+ 
+@@ -394,7 +407,7 @@ double CDECL MSVCRT_cos( double x )
+ double CDECL MSVCRT_cosh( double x )
+ {
+   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+-  return cosh(x);
++  return coshl(x);
+ }
+ 
+ /*********************************************************************
+@@ -403,7 +416,7 @@ double CDECL MSVCRT_cosh( double x )
+ double CDECL MSVCRT_exp( double x )
+ {
+   if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+-  return exp(x);
++  return expl(x);
+ }
+ 
+ /*********************************************************************
+@@ -441,7 +454,7 @@ double CDECL MSVCRT_log10( double x )
+ double CDECL MSVCRT_pow( double x, double y )
+ {
+   /* FIXME: If x < 0 and y is not integral, set EDOM */
+-  double z = pow(x,y);
++  double z = powl(x,y);
+   if (!isfinite(z)) *MSVCRT__errno() = MSVCRT_EDOM;
+   return z;
+ }
+@@ -461,7 +474,7 @@ double CDECL MSVCRT_sin( double x )
+ double CDECL MSVCRT_sinh( double x )
+ {
+   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
+-  return sinh(x);
++  return sinhl(x);
+ }
+ 
+ /*********************************************************************
+-- 
+2.3.5
+

patches/msvcrt-Math_Precision/definition

@@ -0,0 +1 @@
+Fixes: [37149] Calculate msvcrt exponential math operations with higher precision