===================================================================
RCS file: /cvs/mandoc/roff.c,v
retrieving revision 1.404
retrieving revision 1.405
diff -u -p -r1.404 -r1.405
--- mandoc/roff.c	2025/01/06 18:50:17	1.404
+++ mandoc/roff.c	2025/04/08 14:05:09	1.405
@@ -1,4 +1,4 @@
-/* $Id: roff.c,v 1.404 2025/01/06 18:50:17 schwarze Exp $ */
+/* $Id: roff.c,v 1.405 2025/04/08 14:05:09 schwarze Exp $ */
 /*
  * Copyright (c) 2010-2015, 2017-2025 Ingo Schwarze <schwarze@openbsd.org>
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -2470,7 +2470,8 @@ roff_getnum(const char *v, int *pos, int *res, char un
 		myres *= 240.0;
 		break;
 	case 'c':
-		myres *= 240.0 / 2.54;
+		myres *= 24000.0;
+		myres /= 254.0;
 		break;
 	case 'v':
 	case 'P':
@@ -2481,12 +2482,14 @@ roff_getnum(const char *v, int *pos, int *res, char un
 		myres *= 24.0;
 		break;
 	case 'p':
-		myres *= 40.0 / 12.0;
+		myres *= 40.0;
+		myres /= 12.0;
 		break;
 	case 'u':
 		break;
 	case 'M':
-		myres *= 24.0 / 100.0;
+		myres *= 24.0;
+		myres /= 100.0;
 		break;
 	default:
 		break;