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Diffstat (limited to 'gnulib-m4/float_h.m4')
-rw-r--r--gnulib-m4/float_h.m487
1 files changed, 4 insertions, 83 deletions
diff --git a/gnulib-m4/float_h.m4 b/gnulib-m4/float_h.m4
index e4853f3b..a74a0d95 100644
--- a/gnulib-m4/float_h.m4
+++ b/gnulib-m4/float_h.m4
@@ -1,5 +1,5 @@
-# float_h.m4 serial 9
-dnl Copyright (C) 2007, 2009-2015 Free Software Foundation, Inc.
+# float_h.m4 serial 3
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -9,90 +9,11 @@ AC_DEFUN([gl_FLOAT_H],
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST])
FLOAT_H=
- REPLACE_FLOAT_LDBL=0
case "$host_os" in
- aix* | beos* | openbsd* | mirbsd* | irix*)
+ beos* | openbsd*)
FLOAT_H=float.h
- ;;
- freebsd*)
- case "$host_cpu" in
-changequote(,)dnl
- i[34567]86 )
-changequote([,])dnl
- FLOAT_H=float.h
- ;;
- x86_64 )
- # On x86_64 systems, the C compiler may still be generating
- # 32-bit code.
- AC_EGREP_CPP([yes],
- [#if defined __LP64__ || defined __x86_64__ || defined __amd64__
- yes
- #endif],
- [],
- [FLOAT_H=float.h])
- ;;
- esac
- ;;
- linux*)
- case "$host_cpu" in
- powerpc*)
- FLOAT_H=float.h
- ;;
- esac
- ;;
- esac
- case "$host_os" in
- aix* | freebsd* | linux*)
- if test -n "$FLOAT_H"; then
- REPLACE_FLOAT_LDBL=1
- fi
+ gl_CHECK_NEXT_HEADERS([float.h])
;;
esac
-
- dnl Test against glibc-2.7 Linux/SPARC64 bug.
- REPLACE_ITOLD=0
- AC_CACHE_CHECK([whether conversion from 'int' to 'long double' works],
- [gl_cv_func_itold_works],
- [
- AC_RUN_IFELSE(
- [AC_LANG_SOURCE([[
-int i = -1;
-volatile long double ld;
-int main ()
-{
- ld += i * 1.0L;
- if (ld > 0)
- return 1;
- return 0;
-}]])],
- [gl_cv_func_itold_works=yes],
- [gl_cv_func_itold_works=no],
- [case "$host" in
- sparc*-*-linux*)
- AC_EGREP_CPP([yes],
- [#if defined __LP64__ || defined __arch64__
- yes
- #endif],
- [gl_cv_func_itold_works="guessing no"],
- [gl_cv_func_itold_works="guessing yes"])
- ;;
- *) gl_cv_func_itold_works="guessing yes" ;;
- esac
- ])
- ])
- case "$gl_cv_func_itold_works" in
- *no)
- REPLACE_ITOLD=1
- dnl We add the workaround to <float.h> but also to <math.h>,
- dnl to increase the chances that the fix function gets pulled in.
- FLOAT_H=float.h
- ;;
- esac
-
- if test -n "$FLOAT_H"; then
- gl_NEXT_HEADERS([float.h])
- fi
AC_SUBST([FLOAT_H])
- AM_CONDITIONAL([GL_GENERATE_FLOAT_H], [test -n "$FLOAT_H"])
- AC_SUBST([REPLACE_ITOLD])
])