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Diff for /embedaddon/libiconv/srcm4/longlong.m4 between versions 1.1.1.1 and 1.1.1.3

version 1.1.1.1, 2012/02/21 22:57:49 version 1.1.1.3, 2021/03/17 13:38:46
Line 1 Line 1
# longlong.m4 serial 14# longlong.m4 serial 18
dnl Copyright (C) 1999-2007, 2009 Free Software Foundation, Inc.dnl Copyright (C) 1999-2007, 2009-2019 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation  dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,  dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.  dnl with or without modifications, as long as this notice is preserved.
   
 dnl From Paul Eggert.  dnl From Paul Eggert.
   
   AC_PREREQ([2.62])
   
 # Define HAVE_LONG_LONG_INT if 'long long int' works.  # Define HAVE_LONG_LONG_INT if 'long long int' works.
# This fixes a bug in Autoconf 2.61, but can be removed once we# This can be faster than what's in Autoconf 2.62 through 2.68.
# assume 2.62 everywhere. 
   
 # Note: If the type 'long long int' exists but is only 32 bits large  # Note: If the type 'long long int' exists but is only 32 bits large
 # (as on some very old compilers), HAVE_LONG_LONG_INT will not be  # (as on some very old compilers), HAVE_LONG_LONG_INT will not be
Line 16  dnl From Paul Eggert. Line 17  dnl From Paul Eggert.
   
 AC_DEFUN([AC_TYPE_LONG_LONG_INT],  AC_DEFUN([AC_TYPE_LONG_LONG_INT],
 [  [
     AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
   AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],    AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
    [AC_LINK_IFELSE(     [ac_cv_type_long_long_int=yes
       [_AC_TYPE_LONG_LONG_SNIPPET],      if test "x${ac_cv_prog_cc_c99-no}" = xno; then
       [dnl This catches a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.        ac_cv_type_long_long_int=$ac_cv_type_unsigned_long_long_int
        dnl If cross compiling, assume the bug isn't important, since        if test $ac_cv_type_long_long_int = yes; then
        dnl nobody cross compiles for this platform as far as we know.          dnl Catch a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
        AC_RUN_IFELSE(          dnl If cross compiling, assume the bug is not important, since
          [AC_LANG_PROGRAM(          dnl nobody cross compiles for this platform as far as we know.
             [[@%:@include <limits.h>          AC_RUN_IFELSE(
               @%:@ifndef LLONG_MAX            [AC_LANG_PROGRAM(
               @%:@ define HALF \               [[@%:@include <limits.h>
                        (1LL << (sizeof (long long int) * CHAR_BIT - 2))                 @%:@ifndef LLONG_MAX
               @%:@ define LLONG_MAX (HALF - 1 + HALF)                 @%:@ define HALF \
               @%:@endif]],                          (1LL << (sizeof (long long int) * CHAR_BIT - 2))
             [[long long int n = 1;                 @%:@ define LLONG_MAX (HALF - 1 + HALF)
               int i;                 @%:@endif]],
               for (i = 0; ; i++)               [[long long int n = 1;
                 {                 int i;
                   long long int m = n << i;                 for (i = 0; ; i++)
                   if (m >> i != n)                   {
                     return 1;                     long long int m = n << i;
                   if (LLONG_MAX / 2 < m)                     if (m >> i != n)
                     break;                       return 1;
                 }                     if (LLONG_MAX / 2 < m)
               return 0;]])],                       break;
          [ac_cv_type_long_long_int=yes],                   }
          [ac_cv_type_long_long_int=no],                 return 0;]])],
          [ac_cv_type_long_long_int=yes])],            [],
       [ac_cv_type_long_long_int=no])])            [ac_cv_type_long_long_int=no],
             [:])
         fi
       fi])
   if test $ac_cv_type_long_long_int = yes; then    if test $ac_cv_type_long_long_int = yes; then
     AC_DEFINE([HAVE_LONG_LONG_INT], [1],      AC_DEFINE([HAVE_LONG_LONG_INT], [1],
      [Define to 1 if the system has the type `long long int'.])      [Define to 1 if the system has the type 'long long int'.])
   fi    fi
 ])  ])
   
 # Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.  # Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
# This fixes a bug in Autoconf 2.61, but can be removed once we# This can be faster than what's in Autoconf 2.62 through 2.68.
# assume 2.62 everywhere. 
   
 # Note: If the type 'unsigned long long int' exists but is only 32 bits  # Note: If the type 'unsigned long long int' exists but is only 32 bits
 # large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT  # large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
Line 64  AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT], Line 68  AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
 [  [
   AC_CACHE_CHECK([for unsigned long long int],    AC_CACHE_CHECK([for unsigned long long int],
     [ac_cv_type_unsigned_long_long_int],      [ac_cv_type_unsigned_long_long_int],
    [AC_LINK_IFELSE(    [ac_cv_type_unsigned_long_long_int=yes
       [_AC_TYPE_LONG_LONG_SNIPPET],     if test "x${ac_cv_prog_cc_c99-no}" = xno; then
       [ac_cv_type_unsigned_long_long_int=yes],       AC_LINK_IFELSE(
       [ac_cv_type_unsigned_long_long_int=no])])         [_AC_TYPE_LONG_LONG_SNIPPET],
          [],
          [ac_cv_type_unsigned_long_long_int=no])
      fi])
   if test $ac_cv_type_unsigned_long_long_int = yes; then    if test $ac_cv_type_unsigned_long_long_int = yes; then
     AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],      AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
      [Define to 1 if the system has the type `unsigned long long int'.])      [Define to 1 if the system has the type 'unsigned long long int'.])
   fi    fi
 ])  ])
   
Line 83  AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET], Line 90  AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET],
 [  [
   AC_LANG_PROGRAM(    AC_LANG_PROGRAM(
     [[/* For now, do not test the preprocessor; as of 2007 there are too many      [[/* For now, do not test the preprocessor; as of 2007 there are too many
         implementations with broken preprocessors.  Perhaps this can         implementations with broken preprocessors.  Perhaps this can
         be revisited in 2012.  In the meantime, code should not expect         be revisited in 2012.  In the meantime, code should not expect
         #if to work with literals wider than 32 bits.  */         #if to work with literals wider than 32 bits.  */
       /* Test literals.  */        /* Test literals.  */
       long long int ll = 9223372036854775807ll;        long long int ll = 9223372036854775807ll;
       long long int nll = -9223372036854775807LL;        long long int nll = -9223372036854775807LL;
       unsigned long long int ull = 18446744073709551615ULL;        unsigned long long int ull = 18446744073709551615ULL;
       /* Test constant expressions.   */        /* Test constant expressions.   */
       typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)        typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
                     ? 1 : -1)];                     ? 1 : -1)];
       typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1        typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1
                     ? 1 : -1)];                     ? 1 : -1)];
       int i = 63;]],        int i = 63;]],
     [[/* Test availability of runtime routines for shift and division.  */      [[/* Test availability of runtime routines for shift and division.  */
       long long int llmax = 9223372036854775807ll;        long long int llmax = 9223372036854775807ll;
       unsigned long long int ullmax = 18446744073709551615ull;        unsigned long long int ullmax = 18446744073709551615ull;
       return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)        return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
              | (llmax / ll) | (llmax % ll)              | (llmax / ll) | (llmax % ll)
              | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)              | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
              | (ullmax / ull) | (ullmax % ull));]])              | (ullmax / ull) | (ullmax % ull));]])
 ])  ])
Removed from v.1.1.1.1  
changed lines
  Added in v.1.1.1.3

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