New module to perform decimal floating point arithmetic for charts.

[pspp] / src / math / chart-geometry.h

diff --git a/src/math/chart-geometry.h b/src/math/chart-geometry.h
index ef481feb40cbf130cab59bd51c240e2cc4a2ffaf..c543086a39e720cad5742fbef1b6e5084f43a21c 100644 (file)
--- a/src/math/chart-geometry.h
+++ b/src/math/chart-geometry.h
@@ -18,6 +18,11 @@
 #ifndef CHART_GEOMETRY_H
 #define CHART_GEOMETRY_H
 
-double chart_rounded_tick(double tick);
+struct decimal;
+void chart_rounded_tick(double tick, struct decimal *);
+
+void chart_get_scale (double high, double low,
+                          struct decimal *lower, struct decimal *interval, int *n_ticks);
+
 
 #endif