diff --git a/doc/source/fmpcb.rst b/doc/source/fmpcb.rst
index bea71ac9..b6e84c47 100644
--- a/doc/source/fmpcb.rst
+++ b/doc/source/fmpcb.rst
@@ -288,6 +288,10 @@ Arithmetic
 Elementary functions
 -------------------------------------------------------------------------------
 
+.. function:: void fmpcb_const_pi(fmpcb_t y, long prec)
+
+    Sets *y* to the constant `\pi`.
+
 .. function:: void fmpcb_log(fmpcb_t y, const fmpcb_t z, long prec)
 
     Sets *y* to the principal branch of the natural logarithm of *z*,
diff --git a/fmpcb.h b/fmpcb.h
index 086139f2..430373a7 100644
--- a/fmpcb.h
+++ b/fmpcb.h
@@ -530,6 +530,13 @@ void fmpcb_pow_fmpz(fmpcb_t y, const fmpcb_t b, const fmpz_t e, long prec);
 void fmpcb_pow_ui(fmpcb_t y, const fmpcb_t b, ulong e, long prec);
 void fmpcb_pow_si(fmpcb_t y, const fmpcb_t b, long e, long prec);
 
+static __inline__ void
+fmpcb_const_pi(fmpcb_t x, long prec)
+{
+    fmprb_const_pi(fmpcb_realref(x), prec);
+    fmprb_zero(fmpcb_imagref(x));
+}
+
 void fmpcb_log(fmpcb_t r, const fmpcb_t z, long prec);
 
 void fmpcb_exp(fmpcb_t r, const fmpcb_t z, long prec);
diff --git a/fmpcb_poly/gamma_series.c b/fmpcb_poly/gamma_series.c
index 27147f67..f4849720 100644
--- a/fmpcb_poly/gamma_series.c
+++ b/fmpcb_poly/gamma_series.c
@@ -27,13 +27,6 @@
 #include "gamma.h"
 #include "zeta.h"
 
-void
-fmpcb_const_pi(fmpcb_t x, long prec)
-{
-    fmprb_const_pi(fmpcb_realref(x), prec);
-    fmprb_zero(fmpcb_imagref(x));
-}
-
 void
 _fmpcb_poly_gamma_series(fmpcb_ptr res, fmpcb_srcptr h, long hlen, long len, long prec)
 {