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Man Pages


Manual Reference Pages  -  COPYSIGNF (3)

NAME

copysign, copysignf, copysignl - copy sign

CONTENTS

Library
Synopsis
Description
See Also
Standards
History

LIBRARY


.Lb libm

SYNOPSIS


.In 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 x with its sign changed to y ’s.

SEE ALSO

fabs(3), fdim(3), ieee(3), math(3)

STANDARDS

The copysign, copysignf, and copysignl routines conform to -isoC-99. They implement the Copysign function recommended by -ieee754.

HISTORY

The copysign, copysignf, and copysignl functions appeared in BSD 4.3 ,
.Fx 2.0 , and
.Fx 5.3 , respectively.
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