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