Mercurial > hg > octave-kai > gnulib-hg
changeset 5592:7438e152d02d
Initial version.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 18 Jan 2005 23:30:19 +0000 |
parents | 487bb44907f4 |
children | 2f87180c3a9f |
files | m4/ullong_max.m4 modules/ullong_max |
diffstat | 2 files changed, 67 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
new file mode 100644 --- /dev/null +++ b/m4/ullong_max.m4 @@ -0,0 +1,46 @@ +# ullong_max.m4 - define ULLONG_MAX if necessary + +dnl Copyright (C) 2005 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. + +# Written by Paul Eggert. + +AC_DEFUN([gl_ULLONG_MAX], +[ + dnl Avoid _AC_COMPUTE_INT-related macros, as they may not work with + dnl types wider than long int, due to problems with expr. + AC_CACHE_CHECK([for ULLONG_MAX], gl_cv_ullong_max, + [gl_cv_ullong_max=no + AC_EGREP_CPP([ULLONG_MAX is defined], + [ + #include <limits.h> + #ifdef ULLONG_MAX + "ULLONG_MAX is defined" + #endif + ], + [gl_cv_ullong_max=yes]) + case $gl_cv_ullong_max in + no) + for gl_expr in \ + 18446744073709551615ULL \ + 4722366482869645213695ULL \ + 340282366920938463463374607431768211455ULL + do + AC_TRY_COMPILE([], + [char test[$gl_expr == (unsigned long long int) -1 ? 1 : -1]; + static unsigned long long int i = $gl_expr; + return i && test;], + [gl_cv_ullong_max=$gl_expr]) + test $gl_cv_ullong_max != no && break + done + esac]) + case $gl_cv_ullong_max in + yes | no) ;; + *) + AC_DEFINE_UNQUOTED([ULLONG_MAX], [$gl_cv_ullong_max], + [Define as the maximum value of the type 'unsigned long long int', + if the system doesn't define it, and if the system has that type.]);; + esac +])
new file mode 100644 --- /dev/null +++ b/modules/ullong_max @@ -0,0 +1,21 @@ +Description: +The maximum unsigned long long value, as a preprocessor constant. + +Files: +m4/ullong_max.m4 + +Depends-on: + +configure.ac: +gl_ULLONG_MAX + +Makefile.am: + +Include: +<limits.h> + +License: +GPL + +Maintainer: +Paul Eggert