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authorChris Metcalf <cmetcalf@tilera.com>2012-05-17 08:49:19 -0400
committerChris Metcalf <cmetcalf@tilera.com>2012-05-17 08:50:41 -0400
commit0af797def371ceb4f05586d7bcd25841653d2082 (patch)
tree3aa5591836c95fba6b694fb45c1421bf0025de91 /stdlib/bug-getcontext.c
parente39745ffa030f685fbba13534a3023d52a27ead8 (diff)
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math: support platforms with limited FP rounding or exception support
For some tests, just claim that fetestexcept() always returns true, so the rest of the test can be compiled. For libm-test, provide known bogus values for unsupported rounding modes, so fesetround() will return failure. Elsewhere, just add some #ifdefs to avoid code that uses particular FP exceptions if the exceptions aren't supported.
Diffstat (limited to 'stdlib/bug-getcontext.c')
-rw-r--r--stdlib/bug-getcontext.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/stdlib/bug-getcontext.c b/stdlib/bug-getcontext.c
index 745aa1f207..7db49c8499 100644
--- a/stdlib/bug-getcontext.c
+++ b/stdlib/bug-getcontext.c
@@ -9,6 +9,9 @@
static int
do_test (void)
{
+#if FE_ALL_EXCEPT == 0
+ printf("Skipping test; no support for FP exceptions.\n");
+#else
int except_mask = FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW;
int status = feenableexcept (except_mask);
@@ -41,6 +44,7 @@ do_test (void)
printf("\nAt end fegetexcept() returned %d, expected: %d.\n",
mask, except_mask);
+#endif
return 0;
}