Index: configure
===================================================================
--- configure	(revision 300622)
+++ configure	(working copy)
@@ -14250,7 +14250,7 @@
 fi
 
 # BSD might not have exp2, and/or log2
-for ac_func in exp2 log2 exp10 log10 sin cos tan asin acos atan atan2 pow rint exp log remainder fmod round trunc floor ceil
+for ac_func in exp2 log2 exp10 log10 sin cos tan asin acos atan atan2 pow rint exp log remainder fmod round roundf trunc floor ceil
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
Index: configure.ac
===================================================================
--- configure.ac	(revision 300622)
+++ configure.ac	(working copy)
@@ -523,7 +523,7 @@
 # so that AC_CHECK_FUNCS can detect functions in that library.
 AC_CHECK_LIB([m], [sqrt])
 # BSD might not have exp2, and/or log2
-AC_CHECK_FUNCS([exp2 log2 exp10 log10 sin cos tan asin acos atan atan2 pow rint exp log remainder fmod round trunc floor ceil])
+AC_CHECK_FUNCS([exp2 log2 exp10 log10 sin cos tan asin acos atan atan2 pow rint exp log remainder fmod round roundf trunc floor ceil])
 
 # Certain architectures don't really have long double, even though
 # AC_CHECK_FUNCS would otherwise find the following functions.
Index: include/asterisk/compat.h
===================================================================
--- include/asterisk/compat.h	(revision 300622)
+++ include/asterisk/compat.h	(working copy)
@@ -216,4 +216,12 @@
 #define MY_GLOB_FLAGS   (GLOB_NOMAGIC | GLOB_BRACE)
 #endif
 
+#ifndef HAVE_ROUNDF
+#ifdef HAVE_ROUND
+#define	roundf(a) round(a)
+#else
+#define roundf(a)	((float) (int) ((a) + 0.5))
 #endif
+#endif
+
+#endif
Index: include/asterisk/autoconfig.h.in
===================================================================
--- include/asterisk/autoconfig.h.in	(revision 300622)
+++ include/asterisk/autoconfig.h.in	(working copy)
@@ -673,6 +673,9 @@
 /* Define to 1 if you have the `round' function. */
 #undef HAVE_ROUND
 
+/* Define to 1 if you have the `roundf' function. */
+#undef HAVE_ROUNDF
+
 /* Define to 1 if you have the `roundl' function. */
 #undef HAVE_ROUNDL