1#serial 2 2 3dnl From Paul Eggert. 4 5# Define HAVE_LONG_LONG if 'long long' works. 6 7AC_DEFUN([jm_AC_TYPE_LONG_LONG], 8[ 9 AC_CACHE_CHECK([for long long], ac_cv_type_long_long, 10 [AC_TRY_LINK([long long ll = 1; int i = 63;], 11 [long long llmax = (long long) -1; 12 return ll << i | ll >> i | llmax / ll | llmax % ll;], 13 ac_cv_type_long_long=yes, 14 ac_cv_type_long_long=no)]) 15 if test $ac_cv_type_long_long = yes; then 16 AC_DEFINE(HAVE_LONG_LONG, 1, 17 [Define if you have the long long type.]) 18 fi 19]) 20 21# Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works. 22 23AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG], 24[ 25 AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long, 26 [AC_TRY_LINK([unsigned long long ull = 1; int i = 63;], 27 [unsigned long long ullmax = (unsigned long long) -1; 28 return ull << i | ull >> i | ullmax / ull | ullmax % ull;], 29 ac_cv_type_unsigned_long_long=yes, 30 ac_cv_type_unsigned_long_long=no)]) 31 if test $ac_cv_type_unsigned_long_long = yes; then 32 AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1, 33 [Define if you have the unsigned long long type.]) 34 fi 35]) 36