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From d6e0cb60270e8653bda3f339e3a07ce2cd2d6eb0 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Tue, 17 Oct 2017 23:01:36 -0500
Subject: [PATCH] glucose: use fenv to set double precision
---
core/Main.cc | 8 ++++++--
simp/Main.cc | 8 ++++++--
utils/System.h | 2 +-
3 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/core/Main.cc b/core/Main.cc
index c96aadd..994132b 100644
--- a/core/Main.cc
+++ b/core/Main.cc
@@ -96,8 +96,12 @@ int main(int argc, char** argv)
// printf("This is MiniSat 2.0 beta\n");
#if defined(__linux__)
- fpu_control_t oldcw, newcw;
- _FPU_GETCW(oldcw); newcw = (oldcw & ~_FPU_EXTENDED) | _FPU_DOUBLE; _FPU_SETCW(newcw);
+ fenv_t fenv;
+
+ fegetenv(&fenv);
+ fenv.__control_word &= ~0x300; /* _FPU_EXTENDED */
+ fenv.__control_word |= 0x200; /* _FPU_DOUBLE */
+ fesetenv(&fenv);
printf("c WARNING: for repeatability, setting FPU to use double precision\n");
#endif
// Extra options:
diff --git a/simp/Main.cc b/simp/Main.cc
index 4f4772d..70c2e4b 100644
--- a/simp/Main.cc
+++ b/simp/Main.cc
@@ -97,8 +97,12 @@ int main(int argc, char** argv)
#if defined(__linux__)
- fpu_control_t oldcw, newcw;
- _FPU_GETCW(oldcw); newcw = (oldcw & ~_FPU_EXTENDED) | _FPU_DOUBLE; _FPU_SETCW(newcw);
+ fenv_t fenv;
+
+ fegetenv(&fenv);
+ fenv.__control_word &= ~0x300; /* _FPU_EXTENDED */
+ fenv.__control_word |= 0x200; /* _FPU_DOUBLE */
+ fesetenv(&fenv);
printf("WARNING: for repeatability, setting FPU to use double precision\n");
#endif
// Extra options:
diff --git a/utils/System.h b/utils/System.h
index 004d498..a768e99 100644
--- a/utils/System.h
+++ b/utils/System.h
@@ -22,7 +22,7 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA
#define Glucose_System_h
#if defined(__linux__)
-#include <fpu_control.h>
+#include <fenv.h>
#endif
#include "glucose/mtl/IntTypes.h"
--
2.14.2
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