X-Git-Url: http://git.thejh.net/?p=tools.git;a=blobdiff_plain;f=math%2Fround.c;h=f5a07b28dae5b6229144e649b6ebff8982084d88;hp=e422fd0ce216147856f5ed2ddc3ee4871e1f85c2;hb=384ee75e98daccfb078ee084edfdfa0b3188b79e;hpb=7ebc44a8d838298394178687975cf9d2994ff8be

diff --git a/math/round.c b/math/round.c
index e422fd0..f5a07b2 100644
--- a/math/round.c
+++ b/math/round.c
@@ -1,16 +1,24 @@
 #include <jh.h>
 #include <math.h>
+#include <stdbool.h>
 
 int main(int argc, char **argv) {
   if (argc != 2) xperror("invocation: round <target>", 0);
   double target = strtod(argv[1], NULL);
+  bool intmode = (target == floor(target));
   char line[128];
   while (fgets(line, sizeof(line), stdin)) {
+    trim_end(line, "\r\n \t");
+    if (!*line) continue;
     double n = strtod(line, NULL);
     double quot = n / target;
     quot = round(quot);
     n = quot * target;
-    printf("%f\n", n);
+    if (intmode) {
+      printf("%lld\n", (long long)n);
+    } else {
+      printf("%f\n", n);
+    }
   }
   return 0;
 }