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-rw-r--r--libm/kvx/fegetenv.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/libm/kvx/fegetenv.c b/libm/kvx/fegetenv.c
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+++ b/libm/kvx/fegetenv.c
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+/*
+ (C) Copyright 2019 Kalray S.A.
+ This file provides fegetenv for the Coolidge processor.
+*/
+
+#include <fenv.h>
+
+int fegetenv(fenv_t *envp)
+{
+ /* Get the current environment ($cs) */
+ fenv_t fe;
+ fe = __builtin_kvx_get(KVX_SFR_CS);
+
+ /* Mask $cs status to keep exception flags and rounding mode only. */
+ *envp = (fe & (FE_ALL_EXCEPT | FE_RND_MASK));
+
+ /* The above insn cannot fail (while the OS allows access to the
+ floating-point exception flags of the $cs register). Return
+ success. */
+ return 0;
+}