kc3-lang/gnulib/m4/ulonglong.m4
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Hash : c720821f
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Date : 1999-08-01T08:47:11
(jm_AC_TYPE_UNSIGNED_LONG_LONG): Make sure that we can shift, multiply and divide unsigned long long values; Ultrix cc can't do it.
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m4/ulonglong.m4
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#serial 2 dnl From Paul Eggert. 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 ])