PSCALBN 3CW "12 July 2007" "mathcw-1.00"

Table of contents


NAME

pscalbnf, pscalbn, pscalbnl, pscalbnw, pscalbnq, pscalbnll, pscalbndf, pscalbnd, pscalbndl, pscalbndll - scale pair-precision floating-point number by power of FLT_RADIX

SYNOPSIS

cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ]

#include <mathcw.h>
#include <paircw.h>

extern void pscalbnf (float_pair result, const float_pair x, int n);

extern void pscalbn (double_pair result, const double_pair x, int n);

extern void pscalbnl (long_double_pair result, const long_double_pair x, int n);

extern void pscalbnw (__float80_pair result, const __float80_pair x, int n);

extern void pscalbnq (__float128_pair result, const __float128_pair x, int n);

extern void pscalbnll (long_long_double_pair result, const long_long_double_pair x, int n);

extern void pscalbndf (decimal_float_pair result, const decimal_float_pair x, int n);

extern void pscalbnd (decimal_double_pair result, const decimal_double_pair x, int n);

extern void pscalbndl (decimal_long_double_pair result, const decimal_long_double_pair x, int n);

extern void pscalbndll (decimal_long_long_double_pair result, const decimal_long_long_double_pair x, int n);

NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.


DESCRIPTION

Compute the product of x and the value of FLT_RADIX raised to the power n. In the absence of underflow and overflow of the result, this scaling is always exact.

A companion function, pscalbln(result, x, n), provides for a higher-precision exponent.


RETURN VALUES

None. The function result is stored in the first argument, result.

ERRORS

None.

SEE ALSO

pabs(3CW), pacos(3CW), pacosh(3CW), padd(3CW), pasin(3CW), pasinh(3CW), patan(3CW), patan2(3CW), patanh(3CW), pcbrt(3CW), pcmp(3CW), pcon(3CW), pcopy(3CW), pcopysign(3CW), pcos(3CW), pcosh(3CW), pcotan(3CW), pdiv(3CW), pdot(3CW), peps(3CW), peval(3CW), pexp(3CW), pexp10(3CW), pexp16(3CW), pexp2(3CW), pexp8(3CW), pexpm1(3CW), pfdim(3CW), pfmax(3CW), pfmin(3CW), pfrexp(3CW), pfrexph(3CW), phigh(3CW), phypot(3CW), pierf(3CW), pierfc(3CW), pilogb(3CW), pin(3CW), pinfty(3CW), pipow(3CW), pisinf(3CW), pisnan(3CW), pisqnan(3CW), pissnan(3CW), pldexp(3CW), pldexph(3CW), plog(3CW), plog101p(3CW), plog1p(3CW), plow(3CW), pmul(3CW), pmul2(3CW), pneg(3CW), pout(3CW), pprosum(3CW), pqnan(3CW), pscalbln(3CW), pset(3CW), psignbit(3CW), psin(3CW), psinh(3CW), psnan(3CW), psplit(3CW), psqrt(3CW), psub(3CW), psum(3CW), psum2(3CW), ptan(3CW), ptanh(3CW).