DragonFly On-Line Manual Pages


SCALBN(3)	      DragonFly Library Functions Manual	     SCALBN(3)

NAME

scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl, ldexp, ldexpf, ldexpl -- adjust exponent

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h> double scalbln(double x, long n); float scalblnf(float x, long n); long double scalblnl(long double x, long n); double scalbn(double x, int n); float scalbnf(float x, int n); long double scalbnl(long double x, int n); double ldexp(double x, int n); float ldexpf(float x, int n); long double ldexpl(long double x, int n);

DESCRIPTION

These routines return x*(2**n) computed by exponent manipulation.

SEE ALSO

exp(3), frexp(3), math(3)

STANDARDS

These routines conform to ISO/IEC 9899:1999 (``ISO C99''), and they implement the Scalb function recommended by IEEE Std 754-1985.

HISTORY

The scalbn() and scalbnf() functions appeared in 4.3BSD and FreeBSD 2.0, respectively. The scalbln(), scalblnf(), scalblnl() and scalbln() first appeared in DragonFly 2.13. DragonFly 3.5 December 21, 2011 DragonFly 3.5