#include "fp_consts.h" const union _ieee_rep __QNAN = { __DOUBLE_QNAN_REP }; const union _ieee_rep __SNAN = { __DOUBLE_SNAN_REP }; const union _ieee_rep __INF = { __DOUBLE_INF_REP }; const union _ieee_rep __DENORM = { __DOUBLE_DENORM_REP }; /* ISO C99 */ #undef nan /* FIXME */ double nan (const char * tagp __attribute__((unused)) ) { return __QNAN.double_val; }