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_chgsign, _chgsignl

Header File

float.h

Category

Math Routintes

Prototype

double _chgsign(double d);

long double _chgsignl(long double ld);

Description

Reverses the sign of a double-precision floating-point argument, d.

_chgsignl is the long double version; it takes a long double argument and returns a long double result.

Return Value

Returns a value of the same magnitude and exponent as the argument, but with the opposite sign. There is no error return value.

Portability

| POSIX | Win32 | ANSI C | ANSI C++
_chgsign |  | + |  |
_chgsignl |  | + |  |

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