chgsign-chgsignf-chgsignl.md

title	description	ms.date	api_name	api_location	api_type	topic_type	f1_keywords	helpviewer_keywords	ms.assetid
_chgsign, _chgsignf, _chgsignl	API reference for _chgsign, _chgsignf, and _chgsignl; which reverses the sign of a floating-point argument.	04/05/2018	_chgsignl _chgsign _chgsignf	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-math-l1-1-0.dll	DLLExport	apiref	_chgsignf chgsign _chgsignl _chgsign	_chgsignl function _chgsignf function chgsign function _chgsign function	a6646f8e-213d-4564-8617-f43bc66f989f

_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