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1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___MATH_ROUNDING_FUNCTIONS_H
10#define _LIBCPP___MATH_ROUNDING_FUNCTIONS_H
11
12#include <__config>
13#include <__type_traits/enable_if.h>
14#include <__type_traits/is_arithmetic.h>
15#include <__type_traits/is_integral.h>
16#include <__type_traits/is_same.h>
17#include <__type_traits/promote.h>
18
19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20# pragma GCC system_header
21#endif
22
23_LIBCPP_BEGIN_NAMESPACE_STD
24
25namespace __math {
26
27// ceil
28
29[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float ceil(float __x) _NOEXCEPT { return __builtin_ceilf(__x); }
30
31template <class = int>
32[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double ceil(double __x) _NOEXCEPT {
33 return __builtin_ceil(__x);
34}
35
36[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double ceil(long double __x) _NOEXCEPT {
37 return __builtin_ceill(__x);
38}
39
40template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
41[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double ceil(_A1 __x) _NOEXCEPT {
42 return __builtin_ceil((double)__x);
43}
44
45// floor
46
47[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float floor(float __x) _NOEXCEPT { return __builtin_floorf(__x); }
48
49template <class = int>
50[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double floor(double __x) _NOEXCEPT {
51 return __builtin_floor(__x);
52}
53
54[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double floor(long double __x) _NOEXCEPT {
55 return __builtin_floorl(__x);
56}
57
58template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
59[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double floor(_A1 __x) _NOEXCEPT {
60 return __builtin_floor((double)__x);
61}
62
63// llrint
64
65inline _LIBCPP_HIDE_FROM_ABI long long llrint(float __x) _NOEXCEPT { return __builtin_llrintf(__x); }
66
67template <class = int>
68_LIBCPP_HIDE_FROM_ABI long long llrint(double __x) _NOEXCEPT {
69 return __builtin_llrint(__x);
70}
71
72inline _LIBCPP_HIDE_FROM_ABI long long llrint(long double __x) _NOEXCEPT { return __builtin_llrintl(__x); }
73
74template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
75inline _LIBCPP_HIDE_FROM_ABI long long llrint(_A1 __x) _NOEXCEPT {
76 return __builtin_llrint((double)__x);
77}
78
79// llround
80
81inline _LIBCPP_HIDE_FROM_ABI long long llround(float __x) _NOEXCEPT { return __builtin_llroundf(__x); }
82
83template <class = int>
84_LIBCPP_HIDE_FROM_ABI long long llround(double __x) _NOEXCEPT {
85 return __builtin_llround(__x);
86}
87
88inline _LIBCPP_HIDE_FROM_ABI long long llround(long double __x) _NOEXCEPT { return __builtin_llroundl(__x); }
89
90template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
91inline _LIBCPP_HIDE_FROM_ABI long long llround(_A1 __x) _NOEXCEPT {
92 return __builtin_llround((double)__x);
93}
94
95// lrint
96
97inline _LIBCPP_HIDE_FROM_ABI long lrint(float __x) _NOEXCEPT { return __builtin_lrintf(__x); }
98
99template <class = int>
100_LIBCPP_HIDE_FROM_ABI long lrint(double __x) _NOEXCEPT {
101 return __builtin_lrint(__x);
102}
103
104inline _LIBCPP_HIDE_FROM_ABI long lrint(long double __x) _NOEXCEPT { return __builtin_lrintl(__x); }
105
106template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
107inline _LIBCPP_HIDE_FROM_ABI long lrint(_A1 __x) _NOEXCEPT {
108 return __builtin_lrint((double)__x);
109}
110
111// lround
112
113inline _LIBCPP_HIDE_FROM_ABI long lround(float __x) _NOEXCEPT { return __builtin_lroundf(__x); }
114
115template <class = int>
116_LIBCPP_HIDE_FROM_ABI long lround(double __x) _NOEXCEPT {
117 return __builtin_lround(__x);
118}
119
120inline _LIBCPP_HIDE_FROM_ABI long lround(long double __x) _NOEXCEPT { return __builtin_lroundl(__x); }
121
122template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
123inline _LIBCPP_HIDE_FROM_ABI long lround(_A1 __x) _NOEXCEPT {
124 return __builtin_lround((double)__x);
125}
126
127// nearbyint
128
129[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float nearbyint(float __x) _NOEXCEPT {
130 return __builtin_nearbyintf(__x);
131}
132
133template <class = int>
134[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double nearbyint(double __x) _NOEXCEPT {
135 return __builtin_nearbyint(__x);
136}
137
138[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double nearbyint(long double __x) _NOEXCEPT {
139 return __builtin_nearbyintl(__x);
140}
141
142template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
143[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double nearbyint(_A1 __x) _NOEXCEPT {
144 return __builtin_nearbyint((double)__x);
145}
146
147// nextafter
148
149inline _LIBCPP_HIDE_FROM_ABI float nextafter(float __x, float __y) _NOEXCEPT { return __builtin_nextafterf(__x, __y); }
150
151template <class = int>
152_LIBCPP_HIDE_FROM_ABI double nextafter(double __x, double __y) _NOEXCEPT {
153 return __builtin_nextafter(__x, __y);
154}
155
156inline _LIBCPP_HIDE_FROM_ABI long double nextafter(long double __x, long double __y) _NOEXCEPT {
157 return __builtin_nextafterl(__x, __y);
158}
159
160template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
161inline _LIBCPP_HIDE_FROM_ABI __promote_t<_A1, _A2> nextafter(_A1 __x, _A2 __y) _NOEXCEPT {
162 using __result_type = __promote_t<_A1, _A2>;
163 static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
164 return __math::nextafter((__result_type)__x, (__result_type)__y);
165}
166
167// nexttoward
168
169inline _LIBCPP_HIDE_FROM_ABI float nexttoward(float __x, long double __y) _NOEXCEPT {
170 return __builtin_nexttowardf(__x, __y);
171}
172
173template <class = int>
174_LIBCPP_HIDE_FROM_ABI double nexttoward(double __x, long double __y) _NOEXCEPT {
175 return __builtin_nexttoward(__x, __y);
176}
177
178inline _LIBCPP_HIDE_FROM_ABI long double nexttoward(long double __x, long double __y) _NOEXCEPT {
179 return __builtin_nexttowardl(__x, __y);
180}
181
182template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
183inline _LIBCPP_HIDE_FROM_ABI double nexttoward(_A1 __x, long double __y) _NOEXCEPT {
184 return __builtin_nexttoward((double)__x, __y);
185}
186
187// rint
188
189[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float rint(float __x) _NOEXCEPT { return __builtin_rintf(__x); }
190
191template <class = int>
192[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double rint(double __x) _NOEXCEPT {
193 return __builtin_rint(__x);
194}
195
196[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double rint(long double __x) _NOEXCEPT {
197 return __builtin_rintl(__x);
198}
199
200template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
201[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double rint(_A1 __x) _NOEXCEPT {
202 return __builtin_rint((double)__x);
203}
204
205// round
206
207[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float round(float __x) _NOEXCEPT { return __builtin_round(__x); }
208
209template <class = int>
210[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double round(double __x) _NOEXCEPT {
211 return __builtin_round(__x);
212}
213
214[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double round(long double __x) _NOEXCEPT {
215 return __builtin_roundl(__x);
216}
217
218template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
219[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double round(_A1 __x) _NOEXCEPT {
220 return __builtin_round((double)__x);
221}
222
223// trunc
224
225[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float trunc(float __x) _NOEXCEPT { return __builtin_trunc(__x); }
226
227template <class = int>
228[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double trunc(double __x) _NOEXCEPT {
229 return __builtin_trunc(__x);
230}
231
232[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double trunc(long double __x) _NOEXCEPT {
233 return __builtin_truncl(__x);
234}
235
236template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
237[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double trunc(_A1 __x) _NOEXCEPT {
238 return __builtin_trunc((double)__x);
239}
240
241} // namespace __math
242
243_LIBCPP_END_NAMESPACE_STD
244
245#endif // _LIBCPP___MATH_ROUNDING_FUNCTIONS_H