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-rw-r--r--libm/kvx/fesetexceptflag.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/libm/kvx/fesetexceptflag.c b/libm/kvx/fesetexceptflag.c
new file mode 100644
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+++ b/libm/kvx/fesetexceptflag.c
@@ -0,0 +1,24 @@
+/*
+ (C) Copyright 2019 Kalray S.A.
+ This file provides fesetexceptflag for the Coolidge processor.
+*/
+
+#include <fenv.h>
+
+int fesetexceptflag(const fexcept_t *flagp, int excepts)
+{
+ /* Mask excepts to be sure only supported flag bits are set */
+ excepts &= FE_ALL_EXCEPT;
+
+ /* Set the requested flags */
+ fexcept_t flags = (*flagp & excepts);
+
+ /* Set $cs with 'flags' as a set mask and FE_ALL_EXCEPT as a clear
+ mask. */
+ __builtin_kvx_wfxl(KVX_SFR_CS, (long long)flags << 32 | FE_ALL_EXCEPT);
+
+ /* The above insn cannot fail (while the OS allows access to the
+ floating-point exception flags of the $cs register). Return
+ success. */
+ return 0;
+}