std::atan2, std::atan2f, std::atan2l
From cppreference.com
| Defined in header <cmath>
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| (1) | ||
float atan2 ( float y, float x );
double atan2 ( double y, double x );
long double atan2 ( long double y, long double x );
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(until C++23) | |
/*floating-point-type*/
atan2 ( /*floating-point-type*/ y,
/*floating-point-type*/ x );
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(since C++23) (constexpr since C++26) |
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float atan2f( float y, float x );
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(2) | (since C++11) (constexpr since C++26) |
long double atan2l( long double y, long double x );
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(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< class V0, class V1 >
constexpr /*math-common-simd-t*/<V0, V1>
atan2 ( const V0& v_y, const V1& v_x );
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(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 atan2 ( Integer y, Integer x );
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(A) | (constexpr since C++26) |
1-3) Computes the arc tangent of
y / x using the signs of arguments to determine the correct quadrant. The library provides overloads of std::atan2 for all cv-unqualified floating-point types as the type of the parameters.(since C++23)|
S) The SIMD overload performs an element-wise
std::atan2 on v_yand v_x.
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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. |
(since C++11) |
Parameters
| y, x | - | floating-point or integer values |
Return value
If no errors occur, the arc tangent of y / x (
| y |
| x |
) in the range [-π, +π] radians, is returned.
