# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1194786505 -3600
# Node ID 1013cba29012c5282af58e9ad25a8454168ce4ab
# Parent  4a3319c82e3962f79b32fd7d10b4949735982cd2
Handle the case that floorl and roundl are declared but do not exist.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2007-11-11  Bruno Haible  <bruno@clisp.org>
+
+	* m4/roundf.m4 (gl_FUNC_ROUNDF): Handle the case that floorf and
+	roundf were declared but do not exist on functions.
+	* m4/roundl.m4 (gl_FUNC_ROUNDL): Handle the case that floorl and
+	roundl were declared but do not exist on functions.
+	* lib/round.c (HAVE_FLOOR_AND_CEIL): Use HAVE_FLOORF_AND_CEILF and
+	HAVE_FLOORL_AND_CEILL, respectively.
+	Needed for Sun C on Solaris 10.
+
 2007-11-11  Bruno Haible  <bruno@clisp.org>
 
 	* m4/roundf.m4 (gl_FUNC_ROUNDF): Set REPLACE_ROUNDF instead of
diff --git a/lib/round.c b/lib/round.c
--- a/lib/round.c
+++ b/lib/round.c
@@ -30,7 +30,7 @@
 # define DOUBLE long double
 # define MANT_DIG LDBL_MANT_DIG
 # define L_(literal) literal##L
-# define HAVE_FLOOR_AND_CEIL (HAVE_DECL_FLOORL && HAVE_DECL_CEILL)
+# define HAVE_FLOOR_AND_CEIL HAVE_FLOORL_AND_CEILL
 #elif ! defined USE_FLOAT
 # define ROUND round
 # define FLOOR floor
@@ -46,7 +46,7 @@
 # define DOUBLE float
 # define MANT_DIG FLT_MANT_DIG
 # define L_(literal) literal##f
-# define HAVE_FLOOR_AND_CEIL (HAVE_DECL_FLOORF && HAVE_DECL_CEILF)
+# define HAVE_FLOOR_AND_CEIL HAVE_FLOORF_AND_CEILF
 #endif
 
 /* If we're being included from test-round2[f].c, it already defined names for
diff --git a/m4/roundf.m4 b/m4/roundf.m4
--- a/m4/roundf.m4
+++ b/m4/roundf.m4
@@ -20,6 +20,12 @@
     if test "$ac_cv_have_decl_floorf" = yes \
        && test "$ac_cv_have_decl_ceilf" = yes; then
       gl_CHECK_MATH_LIB([ROUNDF_LIBM], [x = floorf (x) + ceilf (x);])
+      if test "$ROUNDF_LIBM" != missing; then
+        AC_DEFINE([HAVE_FLOORF_AND_CEILF], 1,
+          [Define if the both the floorf() and ceilf() functions exist.])
+      else
+        ROUNDF_LIBM=
+      fi
     else
       ROUNDF_LIBM=
     fi
diff --git a/m4/roundl.m4 b/m4/roundl.m4
--- a/m4/roundl.m4
+++ b/m4/roundl.m4
@@ -20,6 +20,12 @@
     if test "$ac_cv_have_decl_floorl" = yes \
        && test "$ac_cv_have_decl_ceill" = yes; then
       gl_CHECK_MATH_LIB([ROUNDL_LIBM], [x = floorl (x) + ceill (x);])
+      if test "$ROUNDL_LIBM" != missing; then
+        AC_DEFINE([HAVE_FLOORL_AND_CEILL], 1,
+          [Define if the both the floorl() and ceill() functions exist.])
+      else
+        ROUNDL_LIBM=
+      fi
     else
       ROUNDL_LIBM=
     fi