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# copysign

From cppreference.com
< c‎ | numeric‎ | math

Defined in header `<math.h>` |  |
float copysignf( float x, float y ); |  | (since C99)
double copysign( double x, double y ); |  | (since C99)
long double copysignl( long double x, long double y ); |  | (since C99)

Composes a floating point value with the magnitude of `x` and the sign of `y`.

### [edit] Parameters

x, y | - | floating point values

### [edit] Return value

Floating point value with the magnitude of `x` and the sign of `y`

### [edit] See also

fabs | absolute value of a floating point value (|x|) (function) [edit]
signbit (C99) | checks if the given number is negative (function) [edit]
C++ documentation for copysign

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