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-rw-r--r--math/bits/mathcalls.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index 2fd1d289da..0f4e625928 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -400,6 +400,9 @@ __MATHDECL_1 (int, canonicalize,, (_Mdouble_ *__cx, const _Mdouble_ *__x));
 
 /* Get NaN payload.  */
 __MATHCALL (getpayload,, (const _Mdouble_ *__x));
+
+/* Set quiet NaN payload.  */
+__MATHDECL_1 (int, setpayload,, (_Mdouble_ *__x, _Mdouble_ __payload));
 #endif
 
 #if defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \