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-rw-r--r--stdlib/tst-strtod-round-skeleton.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/stdlib/tst-strtod-round-skeleton.c b/stdlib/tst-strtod-round-skeleton.c
index 763c9ce983..05d8a4c303 100644
--- a/stdlib/tst-strtod-round-skeleton.c
+++ b/stdlib/tst-strtod-round-skeleton.c
@@ -20,6 +20,7 @@
 /* Defining _LIBC_TEST ensures long double math functions are
    declared in the headers.  */
 #define _LIBC_TEST 1
+#define __STDC_WANT_IEC_60559_TYPES_EXT__
 #include <fenv.h>
 #include <float.h>
 #include <math.h>