PSUM 3CW "16 April 2007" "mathcw-1.00"

Table of contents


NAME

psumf, psum, psuml, psumw, psumq, psumll, psumdf, psumd, psumdl, psumdll - pair-precision vector sum

SYNOPSIS

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

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

extern void psumf (float_pair result, int n, const float [/ * n * /] x);

extern void psum (double_pair result, int n, const double [/ * n * /] x);

extern void psuml (long_double_pair result, int n, const long double [/ * n * /] x);

extern void psumw (__float80_pair result, int n, const __float80 [/ * n * /] x);

extern void psumq (__float128_pair result, int n, const __float128 [/ * n * /] x);

extern void psumll (long_long_double_pair result, int n, const long_long_double [/ * n * /] x);

extern void psumdf (decimal_float_pair result, int n, const decimal_float [/ * n * /] x);

extern void psumd (decimal_double_pair result, int n, const decimal_double [/ * n * /] x);

extern void psumdl (decimal_long_double_pair result, int n, const decimal_long_double [/ * n * /] x);

extern void psumdll (decimal_long_long_double_pair result, int n,
                     const decimal_long_long_double [/ * n * /] x);

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


DESCRIPTION

Compute the vector sum, sum(k = 0 to (n-1)) x[k], of ordinary floating-point values in pair-precision arithmetic for enhanced accuracy.

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), pscalbn(3CW), pset(3CW), psignbit(3CW), psin(3CW), psinh(3CW), psnan(3CW), psplit(3CW), psqrt(3CW), psub(3CW), psum2(3CW), ptan(3CW), ptanh(3CW).