DEF_C99_BUILTIN (BUILT_IN_ATANHF, "atanhf", BT_FN_FLOAT_FLOAT, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_BUILTIN (BUILT_IN_ATANHL, "atanhl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_C90RES_BUILTIN (BUILT_IN_ATANL, "atanl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING)
-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_C99_BUILTIN (BUILT_IN_CBRT, "cbrt", BT_FN_DOUBLE_DOUBLE, ATTR_MATHFN_FPROUNDING)
DEF_C99_BUILTIN (BUILT_IN_CBRTF, "cbrtf", BT_FN_FLOAT_FLOAT, ATTR_MATHFN_FPROUNDING)
DEF_C99_BUILTIN (BUILT_IN_CBRTL, "cbrtl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING)
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_CEILL, "ceill", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CIMAG, "cimag", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CIMAGF, "cimagf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CIMAGL, "cimagl", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CONJ, "conj", BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CONJF, "conjf", BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CONJL, "conjl", BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_C99_BUILTIN (BUILT_IN_COPYSIGN, "copysign", BT_FN_DOUBLE_DOUBLE_DOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_C99_BUILTIN (BUILT_IN_COPYSIGNF, "copysignf", BT_FN_FLOAT_FLOAT_FLOAT, ATTR_CONST_NOTHROW_LIST)
DEF_C99_BUILTIN (BUILT_IN_COPYSIGNL, "copysignl", BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_C99_C90RES_BUILTIN (BUILT_IN_COSHF, "coshf", BT_FN_FLOAT_FLOAT, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_C90RES_BUILTIN (BUILT_IN_COSHL, "coshl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_C90RES_BUILTIN (BUILT_IN_COSL, "cosl", BT_FN_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING)
-DEF_C99_BUILTIN (BUILT_IN_CREAL, "creal", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CREALF, "crealf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
-DEF_C99_BUILTIN (BUILT_IN_CREALL, "creall", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_DREM, "drem", BT_FN_DOUBLE_DOUBLE_DOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_EXT_LIB_BUILTIN (BUILT_IN_DREMF, "dremf", BT_FN_FLOAT_FLOAT_FLOAT, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_EXT_LIB_BUILTIN (BUILT_IN_DREML, "dreml", BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_EXT_LIB_BUILTIN (BUILT_IN_YNF, "ynf", BT_FN_FLOAT_INT_FLOAT, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_EXT_LIB_BUILTIN (BUILT_IN_YNL, "ynl", BT_FN_LONGDOUBLE_INT_LONGDOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
+/* Category: _Complex math builtins. */
+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_C99_BUILTIN (BUILT_IN_CIMAG, "cimag", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CIMAGF, "cimagf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CIMAGL, "cimagl", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CONJ, "conj", BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CONJF, "conjf", BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CONJL, "conjl", BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CREAL, "creal", BT_FN_DOUBLE_COMPLEX_DOUBLE, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CREALF, "crealf", BT_FN_FLOAT_COMPLEX_FLOAT, ATTR_CONST_NOTHROW_LIST)
+DEF_C99_BUILTIN (BUILT_IN_CREALL, "creall", BT_FN_LONGDOUBLE_COMPLEX_LONGDOUBLE, ATTR_CONST_NOTHROW_LIST)
+
/* Category: string/memory builtins. */
/* bcmp, bcopy and bzero have traditionally accepted NULL pointers
when the length parameter is zero, so don't apply attribute "nonnull". */