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Diffstat (limited to 'Build/source/utils/asymptote/fpu.h')
-rw-r--r--Build/source/utils/asymptote/fpu.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/fpu.h b/Build/source/utils/asymptote/fpu.h
new file mode 100644
index 00000000000..7ca8df0c344
--- /dev/null
+++ b/Build/source/utils/asymptote/fpu.h
@@ -0,0 +1,41 @@
+#ifndef FPU_H
+#define FPU_H
+
+#ifdef __GNU_VISIBLE
+#undef __GNU_VISIBLE
+#define __GNU_VISIBLE 1
+#endif
+
+#include "common.h"
+
+#ifdef HAVE_FEENABLEEXCEPT
+#include <fenv.h>
+
+inline int fpu_exceptions() {
+ int excepts=0;
+#ifdef FE_INVALID
+ excepts |= FE_INVALID;
+#endif
+#ifdef FE_DIVBYZERO
+ excepts |= FE_DIVBYZERO;
+#endif
+#ifdef FE_OVERFLOW
+ excepts |= FE_OVERFLOW;
+#endif
+ return excepts;
+}
+
+inline void fpu_trap(bool trap=true)
+{
+ // Conditionally trap FPU exceptions on NaN, zero divide and overflow.
+ if(trap) feenableexcept(fpu_exceptions());
+ else fedisableexcept(fpu_exceptions());
+}
+
+#else
+
+inline void fpu_trap(bool=true) {}
+
+#endif
+
+#endif