acinclude.m4 (LIBGFOR_CHECK_FOR_BROKEN_ISFINITE, [...]): Remove.

	* acinclude.m4 (LIBGFOR_CHECK_FOR_BROKEN_ISFINITE,
	LIBGFOR_CHECK_FOR_BROKEN_ISNAN,
	LIBGFOR_CHECK_FOR_BROKEN_FPCLASSIFY): Remove.
	* configure.ac: Remove above checks.
	* libgfortran.h: Define isnan, isinf, isfinite, isnormal and
	signbit in terms of the respective built-ins.
	* io/write_float.def (WRITE_FLOAT): Use signbit() instead of
	__builtin_signbit().
	* intrinsics/c99_functions.c (tgamma): Use isnan() instead of
	__builtin_isnan().
	* config.h.in: Regenerate.
	* configure: Regenerate.

From-SVN: r164119

1 files changed, 0 insertions, 113 deletions

diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
index 3355287..09cd292 100644
--- a/libgfortran/acinclude.m4
+++ b/libgfortran/acinclude.m4
@@ -196,119 +196,6 @@ if test x"$libgfor_cv_have_crlf" = xyes; then
   AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.])
 fi])
 
-dnl Check whether isfinite is broken.
-dnl The most common problem is that it does not work on long doubles.
-AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_ISFINITE], [
-  AC_CACHE_CHECK([whether isfinite is broken],
-                  libgfor_cv_have_broken_isfinite, [
-  libgfor_check_for_broken_isfinite_save_LIBS=$LIBS
-  LIBS="$LIBS -lm"
-  AC_TRY_RUN([
-#include <math.h>
-#include <float.h>
-int main ()
-{
-#ifdef isfinite
-#ifdef LDBL_MAX
-  if (!isfinite(LDBL_MAX)) return 1;
-#endif
-#ifdef DBL_MAX
-  if (!isfinite(DBL_MAX)) return 1;
-#endif
-#endif
-return 0;
-}], libgfor_cv_have_broken_isfinite=no, libgfor_cv_have_broken_isfinite=yes, [
-case "${target}" in
-  hppa*-*-hpux*) libgfor_cv_have_broken_isfinite=yes ;;
-  *) libgfor_cv_have_broken_isfinite=no ;;
-esac])]
-  LIBS=$libgfor_check_for_broken_isfinite_save_LIBS)
-if test x"$libgfor_cv_have_broken_isfinite" = xyes; then
-  AC_DEFINE(HAVE_BROKEN_ISFINITE, 1, [Define if isfinite is broken.])
-fi])
-
-dnl Check whether isnan is broken.
-dnl The most common problem is that it does not work on long doubles.
-AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_ISNAN], [
-  AC_CACHE_CHECK([whether isnan is broken],
-                  libgfor_cv_have_broken_isnan, [
-  libgfor_check_for_broken_isnan_save_LIBS=$LIBS
-  LIBS="$LIBS -lm"
-  AC_TRY_RUN([
-#include <math.h>
-#include <float.h>
-int main ()
-{
-#ifdef isnan
-#ifdef LDBL_MAX
-  {
-    long double x;
-    x = __builtin_nanl ("");
-    if (!isnan(x)) return 1;
-    if (isnan(LDBL_MAX)) return 1;
-#ifdef NAN
-    x = (long double) NAN;
-    if (!isnan(x)) return 1;
-#endif
-  }
-#endif
-#ifdef DBL_MAX
-  {
-    double y;
-    y = __builtin_nan ("");
-    if (!isnan(y)) return 1;
-    if (isnan(DBL_MAX)) return 1;
-#ifdef NAN
-    y = (double) NAN;
-    if (!isnan(y)) return 1;
-#endif
-  }
-#endif
-#endif
-return 0;
-}], libgfor_cv_have_broken_isnan=no, libgfor_cv_have_broken_isnan=yes, [
-case "${target}" in
-  hppa*-*-hpux*) libgfor_cv_have_broken_isnan=yes ;;
-  *) libgfor_cv_have_broken_isnan=no ;;
-esac])]
-  LIBS=$libgfor_check_for_broken_isnan_save_LIBS)
-if test x"$libgfor_cv_have_broken_isnan" = xyes; then
-  AC_DEFINE(HAVE_BROKEN_ISNAN, 1, [Define if isnan is broken.])
-fi])
-
-dnl Check whether fpclassify is broken.
-dnl The most common problem is that it does not work on long doubles.
-AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_FPCLASSIFY], [
-  AC_CACHE_CHECK([whether fpclassify is broken],
-                  libgfor_cv_have_broken_fpclassify, [
-  libgfor_check_for_broken_fpclassify_save_LIBS=$LIBS
-  LIBS="$LIBS -lm"
-  AC_TRY_RUN([
-#include <math.h>
-#include <float.h>
-int main ()
-{
-#ifdef fpclassify
-#ifdef LDBL_MAX
-        if (fpclassify(LDBL_MAX) == FP_NAN
-            || fpclassify(LDBL_MAX) == FP_INFINITE) return 1;
-#endif
-#ifdef DBL_MAX
-        if (fpclassify(DBL_MAX) == FP_NAN
-            || fpclassify(DBL_MAX) == FP_INFINITE) return 1;
-#endif
-#endif
-return 0;
-}], libgfor_cv_have_broken_fpclassify=no, libgfor_cv_have_broken_fpclassify=yes, [
-case "${target}" in
-  hppa*-*-hpux*) libgfor_cv_have_broken_fpclassify=yes ;;
-  *) libgfor_cv_have_broken_fpclassify=no ;;
-esac])]
-  LIBS=$libgfor_check_for_broken_fpclassify_save_LIBS)
-if test x"$libgfor_cv_have_broken_fpclassify" = xyes; then
-  AC_DEFINE(HAVE_BROKEN_FPCLASSIFY, 1, [Define if fpclassify is broken.])
-fi])
-
 dnl Check whether the st_ino and st_dev stat fields taken together uniquely
 dnl identify the file within the system. This is should be true for POSIX
 dnl systems; it is known to be false on mingw32.