X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fhistogram.h;h=9dc818c4791782bbe7bf5fcf8f45996899a021fe;hb=refs%2Fbuilds%2F20131224033012%2Fpspp;hp=4c0e54fb0488ae38cd931684f52e472476463303;hpb=fe8dc2171009e90d2335f159d05f7e6660e24780;p=pspp
diff --git a/src/math/histogram.h b/src/math/histogram.h
index 4c0e54fb04..9dc818c479 100644
--- a/src/math/histogram.h
+++ b/src/math/histogram.h
@@ -14,8 +14,8 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see . */
-#ifndef __NEW_HISTOGRAM_H__
-#define __NEW_HISTOGRAM_H__
+#ifndef __HISTOGRAM_H__
+#define __HISTOGRAM_H__
#include
@@ -30,7 +30,13 @@ struct histogram
gsl_histogram *gsl_hist;
};
-struct histogram * histogram_create (int bins, double max, double min);
+/*
+ Prepare a histogram for data which lies in the range [min, max)
+ bin_width is a nominal figure only. It is a hint about what might be
+ an good approximate bin width, but the implementation will adjust it
+ as it thinks fit.
+ */
+struct histogram * histogram_create (double bin_width, double min, double max);
void histogram_add (struct histogram *h, double y, double c);