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SCALBN(3)                BSD Library Functions Manual                SCALBN(3)

NAME
     scalbn, scalbln

SYNOPSIS
     #include <math.h>

     double
     scalbn(double x, int n);

     long double
     scalbnl(long double x, int n);

     float
     scalbnf(float x, int n);

     double
     scalbln(double x, long int n);

     long double
     scalblnl(long double x, long int n);

     float
     scalblnf(float x, long int n);

DESCRIPTION
     The scalbn() , and scalbln() functions return x*(2**n) computed by exponent manipulation.

SPECIAL VALUES
     scalbn(+-_, n) returns +-0.

     scalbn(x, _) returns x.

     scalbn(+-infinity, n) returns +-infinity.

     scalbln() has the same special values.

NOTE
     The scalb() function is deprecated.  scalbn() should be used instead.

VECTOR OPERATIONS
     If you need to apply the scalbn() functions to SIMD vectors or arrays, using the following function
     provided by the Accelerate.framework may give significantly better performance:

     #include <Accelerate/Accelerate.h>

     vFloat vscalbf(vFloat x, vSInt32);

SEE ALSO
     math(3), ldexp(3)

STANDARDS
     The scalbn() and scalbln() functions conform to ISO/IEC 9899:2011.

BSD                              July 02, 2008                             BSD