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authorAndreas Schwab <schwab@linux-m68k.org>2011-10-10 20:43:38 +0200
committerAndreas Schwab <schwab@linux-m68k.org>2011-10-10 21:39:59 +0200
commit12cc2fcdb47f9d7a54fda83e231f885c0425a2a9 (patch)
treee654d3fc395978d6ff178e2e0d812ccf147c9247 /sysdeps
parentd9db0846f214b39d2ecb58ab6cd7178a38dd401e (diff)
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Implement __isinf_nsl for IBM long double
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c b/sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c
new file mode 100644
index 0000000000..edeaba5f7c
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_isinf_nsl.c
@@ -0,0 +1,16 @@
+/*
+ * __isinf_nsl(x) returns != 0 if x is ±inf, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int
+__isinf_nsl (long double x)
+{
+ int64_t hx,lx;
+ GET_LDOUBLE_WORDS64(hx,lx,x);
+ return !((lx & 0x7fffffffffffffffLL)
+ | ((hx & 0x7fffffffffffffffLL) ^ 0x7ff0000000000000LL));
+}