Интерактивная система просмотра системных руководств (man-ов)
copysign (3)
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BSD mandoc
NAME
copysign
copysignf
copysignl
- copy sign
LIBRARY
Lb libm
SYNOPSIS
#include <math.h>
double
copysign (double x double y);
float
copysignf (float x float y);
long double
copysignl (long double x long double y);
DESCRIPTION
The
copysign (,);
copysignf ();
and
copysignl ();
functions
return
Fa x
with its sign changed to
Fa y Ns 's .
SEE ALSO
fabs(3),
fdim(3),
ieee(3),
math(3)
STANDARDS
The
copysign (,);
copysignf (,);
and
copysignl ();
routines conform to
St -isoC-99 .
They implement the Copysign function recommended by
St -ieee754 .
HISTORY
The
copysign (,);
copysignf (,);
and
copysignl ();
functions appeared in
BSD 4.3
Fx 2.0 ,
and
Fx 5.3 ,
respectively.
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- STANDARDS
-
- HISTORY
-
