1 /* Subtract long double (ldbl-128) values, narrowing the result to
3 Copyright (C) 2018-2024 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
20 #define f32subf64x __hide_f32subf64x
21 #define f32subf128 __hide_f32subf128
26 #include <math-narrow.h>
32 __fsubl (_Float128 x
, _Float128 y
)
42 FP_UNPACK_SEMIRAW_Q (X
, x
);
43 FP_UNPACK_SEMIRAW_Q (Y
, y
);
45 #if _FP_W_TYPE_SIZE < 64
46 FP_TRUNC (S
, Q
, 1, 4, RN
, R
);
48 FP_TRUNC (S
, Q
, 1, 2, RN
, R
);
50 FP_PACK_SEMIRAW_S (ret
, RN
);
52 CHECK_NARROW_SUB (ret
, x
, y
);
55 libm_alias_float_ldouble (sub
)