Reverses the sign of a double-precision floating-point argument.
double_chgsign(doublex**);**
| Routine | Required Header | Compatibility |
| _chgsign | <float.h> | Win 95, Win NT |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
| LIBC.LIB | Single thread static library, retail version |
| LIBCMT.LIB | Multithread static library, retail version |
| MSVCRT.LIB | Import library for MSVCRT.DLL, retail version |
Return Value
_chgsign returns a value equal to its double-precision floating-point argument x, but with its sign reversed. There is no error return.
Parameter
x
Double-precision floating-point value to be changed