X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=dive.c;h=41bbabd698868bf43c90555acc38d13a83b41a9c;hb=a93641b7222e767d6a3a1be598cd8099d8517059;hp=b7f61293636bba44b0d0c49cf344615ba22ef03f;hpb=f4559ba9fa4610b56f27ffb20eb872908e987baf;p=ext%2Fsubsurface.git

diff --git a/dive.c b/dive.c
index b7f6129..41bbabd 100644
--- a/dive.c
+++ b/dive.c
@@ -1,8 +1,35 @@
+/* dive.c */
+/* maintains the internal dive list structure */
 #include <string.h>
 #include <stdio.h>
 
 #include "dive.h"
 
+double get_depth_units(unsigned int mm, int *frac, const char **units)
+{
+	int decimals;
+	double d;
+	const char *unit;
+
+	switch (output_units.length) {
+	case METERS:
+		d = mm / 1000.0;
+		unit = "m";
+		decimals = d < 20;
+		break;
+	case FEET:
+		d = mm_to_feet(mm);
+		unit = "ft";
+		decimals = 0;
+		break;
+	}
+	if (frac)
+		*frac = decimals;
+	if (units)
+		*units = unit;
+	return d;
+}
+
 struct dive *alloc_dive(void)
 {
 	const int initial_samples = 5;