DEF_EXT_LIB_BUILTIN (BUILT_IN_BCMP, "bcmp", BT_FN_INT_CONST_PTR_CONST_PTR_SIZE, ATTR_PURE_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_BCOPY, "bcopy", BT_FN_VOID_CONST_PTR_PTR_SIZE, ATTR_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_BZERO, "bzero", BT_FN_VOID_PTR_SIZE, ATTR_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CABS, "cabs", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CABSF, "cabsf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CABSL, "cabsl", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CABS, "cabs", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_MATHFN_FPROUNDING)
+DEF_C99_BUILTIN (BUILT_IN_CABSF, "cabsf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_MATHFN_FPROUNDING)
+DEF_C99_BUILTIN (BUILT_IN_CABSL, "cabsl", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_MATHFN_FPROUNDING)
DEF_LIB_BUILTIN (BUILT_IN_CALLOC, "calloc", BT_FN_PTR_SIZE_SIZE, ATTR_MALLOC_NOTHROW_LIST)
DEF_LIB_BUILTIN (BUILT_IN_CEIL, "ceil", BT_FN_DOUBLE_DOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_C99_C90RES_BUILTIN (BUILT_IN_CEILF, "ceilf", BT_FN_FLOAT_FLOAT, ATTR_CONST_NOTHROW_LIST)
DEF_C99_C90RES_BUILTIN (BUILT_IN_FABSF, "fabsf", BT_FN_FLOAT_FLOAT, ATTR_CONST_NOTHROW_LIST)
DEF_C99_C90RES_BUILTIN (BUILT_IN_FABSL, "fabsl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_FFS, "ffs", BT_FN_INT_INT, ATTR_CONST_NOTHROW_LIST)
-DEF_GCC_BUILTIN (BUILT_IN_FFSL, "ffsl", BT_FN_INT_LONG, ATTR_CONST_NOTHROW_LIST)
+DEF_EXT_LIB_BUILTIN (BUILT_IN_FFSL, "ffsl", BT_FN_INT_LONG, ATTR_CONST_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_FFSLL, "ffsll", BT_FN_INT_LONGLONG, ATTR_CONST_NOTHROW_LIST)
DEF_LIB_BUILTIN (BUILT_IN_FLOOR, "floor", BT_FN_DOUBLE_DOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_C99_C90RES_BUILTIN (BUILT_IN_FLOORF, "floorf", BT_FN_FLOAT_FLOAT, ATTR_CONST_NOTHROW_LIST)