LLROUND 3CW "09 March 2006" "mathcw-1.00"

Table of contents


NAME

llroundf, llround, llroundl, llroundw, llroundq, llroundll, llrounddf, llroundd, llrounddl, llrounddll - round to nearest integer value with fixed rounding

SYNOPSIS

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

#include <mathcw.h>

extern long long int llroundf (float x);

extern long long int llround (double x);

extern long long int llroundl (long double x);

extern long long int llroundw (__float80 x);

extern long long int llroundq (__float128 x);

extern long long int llroundll (long_long_double x);

extern long long int llrounddf (decimal_float x);

extern long long int llroundd (decimal_double x);

extern long long int llrounddl (decimal_long_double x);

extern long long int llrounddll (decimal_long_long_double x);

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


DESCRIPTION

Compute the whole number nearest x, rounding halfway cases away from zero, regardless of the current rounding direction.

RETURN VALUES

For finite nonzero arguments, the returned value is the requisite whole number converted to type long long, if that is representable. Otherwise, the returned value is the nearest representable integer value.

ERRORS

If the argument is a NaN, the result is the most negative integer representable in type long long, errno is set to EDOM, and in IEEE 754 arithmetic, the invalid exception flag is raised. If the argument is finite, but the result is not representable in type long long, or the argument is +Infinity or -Infinity, the nearest such integer value is returned, errno is set to ERANGE, and the IEEE 754 invalid exception flag is raised.

SEE ALSO

ceil(3CW), floor(3CW), llrint(3CW), lrint(3CW), lround(3CW), modf(3CW), nearbyint(3CW), rint(3CW), round(3CW), trunc(3CW).