Return one value with the sign of another.
double_copysign(doublex**,doubley);**
| Routine | Required Header | Compatibility |
| _copysign | <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
_copysign returns its double-precision floating point argument x with the same sign as its double-precision floating-point argument y. There is no error return.
Parameters
x
Double-precision floating-point value to be changed
y
Double-precision floating-point value