configure.ac: Check for ieeefp.h.

* configure.ac: Check for ieeefp.h.  Check for fabsf in libm.
	* configure: Regenerate.
	* config.h.in: Likewise.
	* c99_protos.h: New file.
	* libgfortran.h: Include c99_protos.h and conditionally ieeefp.h.
	* intrinsics/c99_functions.c (fabsf): New function.

From-SVN: r91832

libgfortran/ChangeLog

@@ -1,3 +1,12 @@
+2004-12-07  Eric Botcazou  <ebotcazou@libertysurf.fr>
+
+	* configure.ac: Check for ieeefp.h.  Check for fabsf in libm.
+	* configure: Regenerate.
+	* config.h.in: Likewise.
+	* c99_protos.h: New file.
+	* libgfortran.h: Include c99_protos.h and conditionally ieeefp.h.
+	* intrinsics/c99_functions.c (fabsf): New function.
+
 2004-12-06  Richard Henderson  <rth@redhat.com>
 
 	* intrinsics/cshift0.c, intrinsics/eoshift0.c, intrinsics/eoshift2.c,

libgfortran/c99_protos.h

@@ -0,0 +1,126 @@
+/* Declarations of various C99 functions 
+   Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with libgfortran; see the file COPYING.LIB.  If not,
+write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+
+#ifndef C99_PROTOS_H
+#define C99_PROTOS_H
+
+#ifndef HAVE_ACOSF
+extern float acosf(float);
+#endif
+
+#ifndef HAVE_ASINF
+extern float asinf(float);
+#endif
+
+#ifndef HAVE_ATAN2F
+extern float atan2f(float, float);
+#endif
+
+#ifndef HAVE_ATANF
+extern float atanf(float);
+#endif
+
+#ifndef HAVE_CEILF
+extern float ceilf(float);
+#endif
+
+#ifndef HAVE_COPYSIGNF
+extern float copysignf(float, float);
+#endif
+
+#ifndef HAVE_COSF
+extern float cosf(float);
+#endif
+
+#ifndef HAVE_COSHF
+extern float coshf(float);
+#endif
+
+#ifndef HAVE_EXPF
+extern float expf(float);
+#endif
+
+#ifndef HAVE_FABSF
+extern float fabsf(float);
+#endif
+
+#ifndef HAVE_FLOORF
+extern float floorf(float);
+#endif
+
+#ifndef HAVE_FREXPF
+extern float frexpf(float, int *);
+#endif
+
+#ifndef HAVE_HYPOTF
+extern float hypotf(float, float);
+#endif
+
+#ifndef HAVE_LOGF
+extern float logf(float);
+#endif
+
+#ifndef HAVE_LOG10F
+extern float log10f(float);
+#endif
+
+#ifndef HAVE_SCALBNF
+extern float scalbnf(float, int);
+#endif
+
+#ifndef HAVE_SINF
+extern float sinf(float);
+#endif
+
+#ifndef HAVE_SINHF
+extern float sinhf(float);
+#endif
+
+#ifndef HAVE_SQRTF
+extern float sqrtf(float);
+#endif
+
+#ifndef HAVE_TANF
+extern float tanf(float);
+#endif
+
+#ifndef HAVE_TANHF
+extern float tanhf(float);
+#endif
+
+#ifndef HAVE_NEXTAFTERF
+extern float nextafterf(float, float);
+#endif
+
+#ifndef HAVE_POWF
+extern float powf(float, float);
+#endif
+
+#ifndef HAVE_ROUND
+extern double round(double);
+#endif
+
+#ifndef HAVE_ROUNDF
+extern float roundf(float);
+#endif
+
+#endif  /* C99_PROTOS_H  */
+

libgfortran/config.h.in

@@ -45,6 +45,9 @@
 /* libm includes expf */
 #undef HAVE_EXPF
 
+/* libm includes fabsf */
+#undef HAVE_FABSF
+
 /* libm includes finite */
 #undef HAVE_FINITE
 
@@ -75,6 +78,9 @@
 /* libm includes hypotf */
 #undef HAVE_HYPOTF
 
+/* Define to 1 if you have the <ieeefp.h> header file. */
+#undef HAVE_IEEEFP_H
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 

libgfortran/configure

@@ -6450,7 +6450,8 @@ done
 
 
 
-for ac_header in sys/mman.h sys/types.h sys/stat.h
+
+for ac_header in sys/mman.h sys/types.h sys/stat.h ieeefp.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -8195,6 +8196,83 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking for fabsf in -lm" >&5
+echo $ECHO_N "checking for fabsf in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_fabsf+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char fabsf ();
+int
+main ()
+{
+fabsf ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_fabsf=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_fabsf=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_fabsf" >&5
+echo "${ECHO_T}$ac_cv_lib_m_fabsf" >&6
+if test $ac_cv_lib_m_fabsf = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
+
+fi
+
 echo "$as_me:$LINENO: checking for floorf in -lm" >&5
 echo $ECHO_N "checking for floorf in -lm... $ECHO_C" >&6
 if test "${ac_cv_lib_m_floorf+set}" = set; then

libgfortran/configure.ac

@@ -148,7 +148,7 @@ AC_TYPE_OFF_T
 AC_STDC_HEADERS
 AC_HAVE_HEADERS(stdlib.h stdio.h string.h stddef.h math.h unistd.h)
 AC_CHECK_HEADERS(time.h sys/params.h sys/time.h sys/times.h sys/resource.h)
-AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h)
+AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h ieeefp.h)
 AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])])
 
 AC_CHECK_MEMBERS([struct stat.st_blksize])
@@ -177,6 +177,7 @@ AC_CHECK_LIB([m],[copysignf],[AC_DEFINE([HAVE_COPYSIGNF],[1],[libm includes copy
 AC_CHECK_LIB([m],[cosf],[AC_DEFINE([HAVE_COSF],[1],[libm includes cosf])])
 AC_CHECK_LIB([m],[coshf],[AC_DEFINE([HAVE_COSHF],[1],[libm includes coshf])])
 AC_CHECK_LIB([m],[expf],[AC_DEFINE([HAVE_EXPF],[1],[libm includes expf])])
+AC_CHECK_LIB([m],[fabsf],[AC_DEFINE([HAVE_FABSF],[1],[libm includes fabsf])])
 AC_CHECK_LIB([m],[floorf],[AC_DEFINE([HAVE_FLOORF],[1],[libm includes floorf])])
 AC_CHECK_LIB([m],[frexpf],[AC_DEFINE([HAVE_FREXPF],[1],[libm includes frexpf])])
 AC_CHECK_LIB([m],[hypotf],[AC_DEFINE([HAVE_HYPOTF],[1],[libm includes hypotf])])

libgfortran/intrinsics/c99_functions.c

@@ -97,6 +97,14 @@ expf(float x)
 }
 #endif
 
+#ifndef HAVE_FABSF
+float
+fabsf(float x)
+{
+  return (float) fabs(x);
+}
+#endif
+
 #ifndef HAVE_FLOORF
 float
 floorf(float x)

libgfortran/libgfortran.h

@@ -32,6 +32,7 @@ Boston, MA 02111-1307, USA.  */
 #endif
 
 #include "config.h"
+#include "c99_protos.h"
 
 #if HAVE_COMPLEX_H
 # include <complex.h>
@@ -39,6 +40,10 @@ Boston, MA 02111-1307, USA.  */
 #define complex __complex__
 #endif
 
+#if HAVE_IEEEFP_H
+#include <ieeefp.h>
+#endif
+
 #if HAVE_STDINT_H
 #include <stdint.h>
 #endif