ceph/src/boost/libs/math/config/has_gmp.cpp

   1 //  Copyright John Maddock 2008.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <cstddef> // See https://gcc.gnu.org/gcc-4.9/porting_to.html
   7 #include <gmp.h>
   8 #include <boost/config.hpp>
   9
  10 #ifdef __GNUC__
  11 #pragma message "__GNU_MP_VERSION=" BOOST_STRINGIZE(__GNU_MP_VERSION)
  12 #pragma message "__GNU_MP_VERSION_MINOR=" BOOST_STRINGIZE(__GNU_MP_VERSION_MINOR)
  13 #endif
  14
  15 #if (__GNU_MP_VERSION < 4) || ((__GNU_MP_VERSION == 4) && (__GNU_MP_VERSION_MINOR < 2))
  16 #error "Incompatible GMP version"
  17 #endif
  18
  19 int main()
  20 {
  21    void* (*alloc_func_ptr)(size_t);
  22    void* (*realloc_func_ptr)(void*, size_t, size_t);
  23    void (*free_func_ptr)(void*, size_t);
  24
  25    mp_get_memory_functions(&alloc_func_ptr, &realloc_func_ptr, &free_func_ptr);
  26
  27    mpz_t integ;
  28    mpz_init(integ);
  29    if (integ[0]._mp_d)
  30       mpz_clear(integ);
  31
  32    return 0;
  33 }