30 #ifndef _GLIBCXX_BITS_STD_ABS_H
31 #define _GLIBCXX_BITS_STD_ABS_H
33 #ifdef _GLIBCXX_SYSHDR
34 #pragma GCC system_header
39 #pragma GCC diagnostic push
40 #pragma GCC diagnostic ignored "-Wpedantic"
41 #pragma GCC diagnostic ignored "-Wlong-long"
43 #define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
44 #include_next <stdlib.h>
45 #ifdef __CORRECT_ISO_CPP_MATH_H_PROTO
46 # include_next <math.h>
48 #undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS
54 namespace std _GLIBCXX_VISIBILITY(default)
56 _GLIBCXX_BEGIN_NAMESPACE_VERSION
60 #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
62 abs(
long __i) {
return __builtin_labs(__i); }
65 #ifdef _GLIBCXX_USE_LONG_LONG
67 abs(
long long __x) {
return __builtin_llabs (__x); }
75 #ifndef __CORRECT_ISO_CPP_MATH_H_PROTO
76 inline _GLIBCXX_CONSTEXPR
double
78 {
return __builtin_fabs(__x); }
80 inline _GLIBCXX_CONSTEXPR
float
82 {
return __builtin_fabsf(__x); }
84 inline _GLIBCXX_CONSTEXPR
long double
86 {
return __builtin_fabsl(__x); }
89 #if defined(__GLIBCXX_TYPE_INT_N_0)
90 __extension__
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_0
91 abs(__GLIBCXX_TYPE_INT_N_0 __x) {
return __x >= 0 ? __x : -__x; }
93 #if defined(__GLIBCXX_TYPE_INT_N_1)
94 __extension__
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_1
95 abs(__GLIBCXX_TYPE_INT_N_1 __x) {
return __x >= 0 ? __x : -__x; }
97 #if defined(__GLIBCXX_TYPE_INT_N_2)
98 __extension__
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_2
99 abs(__GLIBCXX_TYPE_INT_N_2 __x) {
return __x >= 0 ? __x : -__x; }
101 #if defined(__GLIBCXX_TYPE_INT_N_3)
102 __extension__
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_3
103 abs(__GLIBCXX_TYPE_INT_N_3 __x) {
return __x >= 0 ? __x : -__x; }
106 #if defined(__STDCPP_FLOAT16_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
109 {
return _Float16(__builtin_fabsf(__x)); }
112 #if defined(__STDCPP_FLOAT32_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
115 {
return __builtin_fabsf(__x); }
118 #if defined(__STDCPP_FLOAT64_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64)
121 {
return __builtin_fabs(__x); }
124 #if defined(__STDCPP_FLOAT128_T__) && defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128)
127 {
return __builtin_fabsl(__x); }
128 #elif defined(__STDCPP_FLOAT128_T__) && defined(_GLIBCXX_HAVE_FLOAT128_MATH)
131 {
return __builtin_fabsf128(__x); }
134 #if defined(__STDCPP_BFLOAT16_T__) && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32)
135 constexpr __gnu_cxx::__bfloat16_t
136 abs(__gnu_cxx::__bfloat16_t __x)
137 {
return __gnu_cxx::__bfloat16_t(__builtin_fabsf(__x)); }
140 #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
141 __extension__
inline _GLIBCXX_CONSTEXPR
145 #if defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128)
146 return __builtin_fabsl(__x);
147 #elif defined(_GLIBCXX_HAVE_FLOAT128_MATH)
148 return __builtin_fabsf128(__x);
151 return __builtin_signbit(__x) ? -__x : __x;
156 _GLIBCXX_END_NAMESPACE_VERSION
160 #pragma GCC diagnostic pop
_Tp abs(const complex< _Tp > &)
Return magnitude of z.
ISO C++ entities toplevel namespace is std.