std::expm1, std::expm1f, std::expm1l
From cppreference.com
| Defined in header <cmath>
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| (1) | ||
float expm1 ( float num ); double expm1 ( double num ); |
(until C++23) | |
| /*floating-point-type*/ expm1 ( /*floating-point-type*/ num ); |
(since C++23) (constexpr since C++26) |
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float expm1f( float num ); |
(2) | (since C++11) (constexpr since C++26) |
long double expm1l( long double num ); |
(3) | (since C++11) (constexpr since C++26) |
| SIMD overload (since C++26) |
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| Defined in header <simd>
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| template< /*math-floating-point*/ V > constexpr /*deduced-simd-t*/<V> |
(S) | (since C++26) |
| Additional overloads (since C++11) |
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| Defined in header <cmath>
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template< class Integer > double expm1 ( Integer num ); |
(A) | (constexpr since C++26) |
1-3) Computes the e (Euler's number, 2.7182818...) raised to the given power num, minus 1.0. This function is more accurate than the expression std::exp(num) - 1.0 if num is close to zero. The library provides overloads of
std::expm1 for all cv-unqualified floating-point types as the type of the parameter.(since C++23)|
S) The SIMD overload performs an element-wise
std::expm1 on v_num.
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(since C++26) |
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A) Additional overloads are provided for all integer types, which are treated as double.
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(since C++11) |
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