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-rw-r--r--math/bits/mathcalls.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index 7c6ca03..90508ca 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -70,6 +70,8 @@ __MATHCALL_VEC (tan,, (_Mdouble_ __x));
__MATHCALL (acospi,, (_Mdouble_ __x));
/* Arc sine of X, divided by pi. */
__MATHCALL (asinpi,, (_Mdouble_ __x));
+/* Arc tangent of X, divided by pi. */
+__MATHCALL (atanpi,, (_Mdouble_ __x));
/* Cosine of pi * X. */
__MATHCALL (cospi,, (_Mdouble_ __x));