cmake HAVE_IEEEFP_H_ examples

GenericMappingTools/gmt cmake/modules/ConfigureChecks.cmake :337 

check_include_file (ieeefp.h            HAVE_IEEEFP_H_)

GenericMappingTools/gmt cmake/modules/ConfigureChecks.cmake :345 

endif (HAVE_IEEEFP_H_)