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authorSzabolcs Nagy <nsz@port70.net>2013-08-18 20:08:18 +0000
committerSzabolcs Nagy <nsz@port70.net>2013-08-18 20:08:18 +0000
commita6b0170a7f51fdea9beec57ae794221290af232b (patch)
tree22651ba3480fc272933133af780e6beb10ab2d3d /src/fenv/fesetround.c
parentd8764bf84022397ff9d22310f78fcd78d801e2bf (diff)
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fix fenv exception functions to mask their argument
fesetround.c is a wrapper to do the arch independent argument
check (on archs where rounding mode is not stored in 2 bits
__fesetround still has to check its arguments)

on powerpc fe*except functions do not accept the extra invalid
flags of its fpscr register

the useless FENV_ACCESS pragma was removed from feupdateenv
Diffstat (limited to 'src/fenv/fesetround.c')
-rw-r--r--src/fenv/fesetround.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/fenv/fesetround.c b/src/fenv/fesetround.c
new file mode 100644
index 00000000..9bbd4ade
--- /dev/null
+++ b/src/fenv/fesetround.c
@@ -0,0 +1,23 @@
+#include <fenv.h>
+
+/* __fesetround wrapper for arch independent argument check */
+
+int __fesetround(int);
+
+int fesetround(int r)
+{
+	if (r & ~(
+		FE_TONEAREST
+#ifdef FE_DOWNWARD
+		|FE_DOWNWARD
+#endif
+#ifdef FE_UPWARD
+		|FE_UPWARD
+#endif
+#ifdef FE_TOWARDZERO
+		|FE_TOWARDZERO
+#endif
+		))
+		return -1;
+	return __fesetround(r);
+}