_chgsign
, _chgsignf
, _chgsignl
Reverses the sign of a floating-point argument.
Syntax
double _chgsign(
double x
);
float _chgsignf(
float x
);
long double _chgsignl(
long double x
);
Parameters
x
The floating-point value to be changed.
Return value
The _chgsign
functions return a value that's equal to the floating-point argument x
, but with its sign reversed. There's no error return.
Requirements
Routine | Required header |
---|---|
_chgsign |
<float.h> |
_chgsignf , _chgsignl |
<math.h> |
For more compatibility information, see Compatibility.
See also
Math and floating-point support
fabs
, fabsf
, fabsl
copysign
, copysignf
, copysignl
, _copysign
, _copysignf
, _copysignl
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