Index: Makefile
===================================================================
--- Makefile	(revision 313777)
+++ Makefile	(working copy)
@@ -94,7 +94,8 @@
 COMMON_SRCS+=	s_copysignl.c s_fabsl.c s_llrintl.c s_lrintl.c s_modfl.c
 .if ${LDBL_PREC} != 53
 # If long double != double use these; otherwise, we alias the double versions.
-COMMON_SRCS+=	e_acoshl.c e_acosl.c e_asinl.c e_atan2l.c e_atanhl.c \
+COMMON_SRCS+=	catrigl.c \
+	e_acoshl.c e_acosl.c e_asinl.c e_atan2l.c e_atanhl.c \
 	e_coshl.c e_fmodl.c e_hypotl.c \
 	e_lgammal.c e_lgammal_r.c \
 	e_remainderl.c e_sinhl.c e_sqrtl.c \
@@ -107,7 +108,7 @@
 .endif
 
 # C99 complex functions
-COMMON_SRCS+=	catrig.c catrigf.c catrigl.c \
+COMMON_SRCS+=	catrig.c catrigf.c \
 	s_ccosh.c s_ccoshf.c s_cexp.c s_cexpf.c \
 	s_cimag.c s_cimagf.c s_cimagl.c \
 	s_conj.c s_conjf.c s_conjl.c \
@@ -147,9 +149,12 @@
 MLINKS+=atanh.3 atanhf.3 atanh.3 atanhl.3
 MLINKS+=atan2.3 atan2f.3 atan2.3 atan2l.3 \
 	atan2.3 carg.3 atan2.3 cargf.3 atan2.3 cargl.3
-MLINKS+=cacos.3 cacosf.3 cacos.3 cacosh.3 cacos.3 cacoshf.3 \
-	cacos.3 casin.3 cacos.3 casinf.3 cacos.3 casinh.3 cacos.3 casinhf.3 \
-	cacos.3 catan.3 cacos.3 catanf.3 cacos.3 catanh.3 cacos.3 catanhf.3
+MLINKS+=cacos.3 cacosf.3 cacos.3 cacosl.3 \
+	cacos.3 cacosh.3 cacos.3 cacoshf.3 cacos.3 cacoshl.3 \
+	cacos.3 casin.3 cacos.3 casinf.3 cacos.3 casinl.3 \
+	cacos.3 casinh.3 cacos.3 casinhf.3 cacos.3 casinhl.3 \
+	cacos.3 catan.3 cacos.3 catanf.3 cacos.3 catanl.3 \
+	cacos.3 catanh.3 cacos.3 catanhf.3 cacos.3 catanhl.3
 MLINKS+=ccos.3 ccosf.3 ccos.3 csin.3 ccos.3 csinf.3 ccos.3 ctan.3 ccos.3 ctanf.3
 MLINKS+=ccosh.3 ccoshf.3 ccosh.3 csinh.3 ccosh.3 csinhf.3 \
 	ccosh.3 ctanh.3 ccosh.3 ctanhf.3
Index: man/cacos.3
===================================================================
--- man/cacos.3	(revision 313777)
+++ man/cacos.3	(working copy)
@@ -24,23 +24,29 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd Jul 14, 2015
+.Dd February 15, 2017
 .Dt CACOS 3
 .Os
 .Sh NAME
 .Nm cacos ,
 .Nm cacosf ,
+.Nm cacosl ,
 .Nm cacosh ,
 .Nm cacoshf ,
+.Nm cacoshl ,
 .Nm casin ,
-.Nm casinf
+.Nm casinf ,
+.Nm casinl ,
 .Nm casinh ,
-.Nm casinhf
-.Nm catan ,
-.Nm catanf
+.Nm casinhf ,
+.Nm casinhl ,
+.Nm catan  ,
+.Nm catanf ,
+.Nm catanl ,
 .Nm catanh ,
-.Nm catanhf
-.Nd complex arc trigonometric and hyperbolic functions
+.Nm catanhf ,
+.Nm catanhl
+.Nd complex inverse trigonometric and hyperbolic functions
 .Sh LIBRARY
 .Lb libm
 .Sh SYNOPSIS
@@ -49,26 +55,39 @@
 .Fn cacos "double complex z"
 .Ft float complex
 .Fn cacosf "float complex z"
+.Ft long double complex
+.Fn cacosl "long double complex z"
 .Ft double complex
 .Fn cacosh "double complex z"
 .Ft float complex
 .Fn cacoshf "float complex z"
+.Ft long double complex
+.Fn cacoshl "long double complex z"
 .Ft double complex
 .Fn casin "double complex z"
 .Ft float complex
 .Fn casinf "float complex z"
+.Ft long double complex
+.Fn casinl "long double complex z"
 .Ft double complex
 .Fn casinh "double complex z"
 .Ft float complex
 .Fn casinhf "float complex z"
+.Ft long double complex
+.Fn casinhl "long double complex z"
 .Ft double complex
 .Fn catan "double complex z"
 .Ft float complex
 .Fn catanf "float complex z"
+.Ft long double complex
+.Fn catanl "long double complex z"
 .Ft double complex
 .Fn catanh "double complex z"
 .Ft float complex
 .Fn catanhf "float complex z"
+.Ft long double complex
+.Fn catanhl "long double complex z"
+
 .Sh DESCRIPTION
 The
 .Fn cacos ,
@@ -97,10 +116,23 @@
 functions perform the same operations in
 .Fa float
 precision.
+The
+.Fn cacosl ,
+.Fn casinl ,
+.Fn catanl
+.Fn cacoshl ,
+.Fn casinhl ,
+and
+.Fn catanhl
+functions perform the same operations in
+.Fa long double
+precision.
+
 .Pp
 .ds Un \[cu]
 There is no universal convention for defining the principal values of
-these functions. The following table gives the branch cuts, and the
+these functions.
+The following table gives the branch cuts, and the
 corresponding ranges for the return values, adopted by the C language.
 .Bl -column ".Sy Function" ".Sy (-\*(If*I, -I) \*(Un (I, \*(If*I)" ".Sy [-\*(Pi/2*I, \*(Pi/2*I]"
 .It Sy Function Ta Sy Branch Cut(s) Ta Sy Range
Index: src/catrig.c
===================================================================
--- src/catrig.c	(revision 313777)
+++ src/catrig.c	(working copy)
@@ -328,6 +328,10 @@
 	return (CMPLX(copysign(rx, x), copysign(ry, y)));
 }
 
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(casinh, casinhl);
+#endif
+
 /*
  * casin(z) = reverse(casinh(reverse(z)))
  * where reverse(x + I*y) = y + I*x = I*conj(z).
@@ -340,6 +344,10 @@
 	return (CMPLX(cimag(w), creal(w)));
 }
 
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(casin, casinl);
+#endif
+
 /*
  * cacos(z) = PI/2 - casin(z)
  * but do the computation carefully so cacos(z) is accurate when z is
@@ -422,6 +430,10 @@
 	return (CMPLX(rx, ry));
 }
 
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(cacos, cacosl);
+#endif
+
 /*
  * cacosh(z) = I*cacos(z) or -I*cacos(z)
  * where the sign is chosen so Re(cacosh(z)) >= 0.
@@ -448,6 +460,10 @@
 	return (CMPLX(fabs(ry), copysign(rx, cimag(z))));
 }
 
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(cacosh, cacoshl);
+#endif
+
 /*
  * Optimized version of clog() for |z| finite and larger than ~RECIP_EPSILON.
  */
@@ -626,6 +642,10 @@
 	return (CMPLX(copysign(rx, x), copysign(ry, y)));
 }
 
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(catanh, catanhl);
+#endif
+
 /*
  * catan(z) = reverse(catanh(reverse(z)))
  * where reverse(x + I*y) = y + I*x = I*conj(z).
@@ -637,3 +657,7 @@
 
 	return (CMPLX(cimag(w), creal(w)));
 }
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(catan, catanl);
+#endif