[GRASS-CVS] hamish: grass6/raster/r.report prt_report.c, 2.4, 2.4.2.1

[grass at intevation.de]

Author: hamish

Update of /grassrepository/grass6/raster/r.report
In directory doto:/tmp/cvs-serv1140/grass6/raster/r.report

Modified Files:
      Tag: releasebranch_6_3
	prt_report.c 
Log Message:
more precise conversions for acres and sq miles
  (merge from HEAD)


Index: prt_report.c
===================================================================
RCS file: /grassrepository/grass6/raster/r.report/prt_report.c,v
retrieving revision 2.4
retrieving revision 2.4.2.1
diff -u -d -r2.4 -r2.4.2.1
--- prt_report.c	30 Sep 2007 07:08:23 -0000	2.4
+++ prt_report.c	16 Nov 2007 11:18:34 -0000	2.4.2.1
@@ -63,7 +63,7 @@
 	case ACRES:
 	    unit[i].label[0] = "";
 	    unit[i].label[1] = "acres";
-	    unit[i].factor   = 2.471e-4;
+	    unit[i].factor   = 2.47105381467165e-4;  /* 640 acres in a sq mile */
 	    break;
 
 	case HECTARES:
@@ -75,7 +75,7 @@
 	case SQ_MILES:
 	    unit[i].label[0] = "square";
 	    unit[i].label[1] = " miles";
-	    unit[i].factor   = 3.861e-7;
+	    unit[i].factor   = 3.86102158542446e-7;  /* 1 / ( (0.0254m/in * 12in/ft * 5280ft/mi)^2 ) */
 	    break;
 
 	default: