| #serial 2 |
| |
| dnl From Paul Eggert. |
| |
| # Define HAVE_LONG_LONG if 'long long' works. |
| |
| AC_DEFUN([jm_AC_TYPE_LONG_LONG], |
| [ |
| AC_CACHE_CHECK([for long long], ac_cv_type_long_long, |
| [AC_TRY_LINK([long long ll = 1; int i = 63;], |
| [long long llmax = (long long) -1; |
| return ll << i | ll >> i | llmax / ll | llmax % ll;], |
| ac_cv_type_long_long=yes, |
| ac_cv_type_long_long=no)]) |
| if test $ac_cv_type_long_long = yes; then |
| AC_DEFINE(HAVE_LONG_LONG, 1, |
| [Define if you have the long long type.]) |
| fi |
| AC_CACHE_CHECK(for __int64, ac_cv_c___int64, |
| [AC_TRY_LINK([__int64 ll; int i = 63;], |
| [__int64 llmax = (__int64) -1; |
| return ll << i | ll >> i | llmax / ll | llmax % ll;], |
| ac_cv_c___int64=yes, |
| ac_cv_c___int64=no)]) |
| if test $ac_cv_c___int64 = yes; then |
| AC_DEFINE(HAVE___INT64, 1, |
| [Define if your compiler supports the \`__int64' type.]) |
| fi |
| ]) |
| |
| # Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works. |
| |
| AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG], |
| [ |
| AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, |
| [AC_TRY_LINK([unsigned long long ull = 1; int i = 63;], |
| [unsigned long long ullmax = (unsigned long long) -1; |
| return ull << i | ull >> i | ullmax / ull | ullmax % ull;], |
| ac_cv_type_unsigned_long_long=yes, |
| ac_cv_type_unsigned_long_long=no)]) |
| if test $ac_cv_type_unsigned_long_long = yes; then |
| AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1, |
| [Define if you have the unsigned long long type.]) |
| fi |
| ]) |
