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