1 files changed, 32 insertions, 0 deletions
diff --git a/awklib/eg/lib/round.awk b/awklib/eg/lib/round.awk
new file mode 100644
index 00000000..d484e148
--- /dev/null
+++ b/awklib/eg/lib/round.awk
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+# round --- do normal rounding
+#
+# Arnold Robbins, arnold@gnu.ai.mit.edu, August, 1996
+# Public Domain
+
+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) }