1: # ifndef NDEBUG 2: # define _assert(ex) {if (!(ex)){fprintf(stderr,"Assertion failed: file %s, line %d\n", __FILE__, __LINE__);exit(1);}} 3: # define assert(ex) {if (!(ex)){fprintf(stderr,"Assertion failed: file %s, line %d\n", __FILE__, __LINE__);exit(1);}} 4: # else 5: # define _assert(ex) ; 6: # define assert(ex) ; 7: # endif