copysignf man page on FreeBSD

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COPYSIGN(3)		 BSD Library Functions Manual		   COPYSIGN(3)

NAME
     copysign, copysignf, copysignl — copy sign

LIBRARY
     Math Library (libm, -lm)

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 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 ISO/IEC
     9899:1999 (“ISO C99”).  They implement the Copysign function recommended
     by IEEE Std 754-1985.

HISTORY
     The copysign(), copysignf(), and copysignl() functions appeared in
     4.3BSD, FreeBSD 2.0, and FreeBSD 5.3, respectively.

BSD			       January 26, 2005				   BSD
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