Reverses the sign of a double-precision, floating-point argument.
double _chgsign( double x );
- Double-precision, floating-point value to be changed.
_chgsign returns a value equal to its double-precision, floating-point argument x, but with its sign reversed. There is no error return.
|_chgsign||<float.h>||Win 98, Win Me, Win NT, Win 2000, Win XP|
For additional compatibility information, see Compatibility in the Introduction.
All versions of the C run-time libraries.