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-rw-r--r--src/isnan.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/isnan.h b/src/isnan.h
index cfae92fc7..de8b6d629 100644
--- a/src/isnan.h
+++ b/src/isnan.h
@@ -43,6 +43,8 @@
#if defined(__isfinite)
# define isFinite(_a) (__isfinite(_a)) /* MacOSX/Darwin definition < 10.4 */
+#elif defined(__sgi)
+# define isFinite(_a) (_isfinite(_a))
#elif defined(isfinite)
# define isFinite(_a) (isfinite(_a))
#else