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# round.awk --- do normal rounding
#
# Arnold Robbins, arnold@gnu.org, Public Domain
# August, 1996
function round(x, ival, aval, fraction)
{
ival = int(x) # integer part, int() truncates
# see if fractional part
if (ival == x) # no fraction
return x
if (x < 0) {
aval = -x # absolute value
ival = int(aval)
fraction = aval - ival
if (fraction >= .5)
return int(x) - 1 # -2.5 --> -3
else
return int(x) # -2.3 --> -2
} else {
fraction = x - ival
if (fraction >= .5)
return ival + 1
else
return ival
}
}
# test harness
{ print $0, round($0) }