From 003fdafbea1a788195114c28bf6a56e195e3a954 Mon Sep 17 00:00:00 2001
From: Justin Hibbits <jhibbits@FreeBSD.org>
Date: Fri, 28 Dec 2018 01:34:08 +0000
Subject: [PATCH] libm: Include float.h to get LDBL_MANT_DIG

The long double aliases of double functions are only exposed as aliases if
LDBL_MANT_DIG is 53 (same as DBL_MANT_DIG).  Without float.h included these
files were not exposing weak aliases as expected, leading to link failures
if programs use the *l functions.  This should fix editors/calligra on
targets with 64-bit long double, which uses erfl and erfcl.  Found on
powerpc64.

Reviewed by:	kargl@
---
 lib/msun/src/s_cbrt.c  | 1 +
 lib/msun/src/s_cproj.c | 1 +
 lib/msun/src/s_erf.c   | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/msun/src/s_cbrt.c b/lib/msun/src/s_cbrt.c
index 30ffe5f294a2..0e609e110d9a 100644
--- a/lib/msun/src/s_cbrt.c
+++ b/lib/msun/src/s_cbrt.c
@@ -15,6 +15,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <float.h>
 #include "math.h"
 #include "math_private.h"
 
diff --git a/lib/msun/src/s_cproj.c b/lib/msun/src/s_cproj.c
index 220b4c83fe31..38e774723e86 100644
--- a/lib/msun/src/s_cproj.c
+++ b/lib/msun/src/s_cproj.c
@@ -30,6 +30,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <complex.h>
+#include <float.h>
 #include <math.h>
 
 #include "math_private.h"
diff --git a/lib/msun/src/s_erf.c b/lib/msun/src/s_erf.c
index e1d63bca8197..5f228474f422 100644
--- a/lib/msun/src/s_erf.c
+++ b/lib/msun/src/s_erf.c
@@ -107,7 +107,7 @@ __FBSDID("$FreeBSD$");
  *	   	erfc/erf(NaN) is NaN
  */
 
-
+#include <float.h>
 #include "math.h"
 #include "math_private.h"