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-rw-r--r--src/math/isnan.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/src/math/isnan.c b/src/math/isnan.c
deleted file mode 100644
index 80bbb741..00000000
--- a/src/math/isnan.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <math.h>
-
-#define isnan(__x) (fpclassify(__x) == FP_NAN)
-
-/*
-STDC(199901)
-LINK(m)
-see also SUSv1
-*/