From: Andrea Zagli <a.zagli@comune.scandicci.fi.it>
Date: Tue, 15 Feb 2011 08:20:16 +0000 (+0100)
Subject: Aggiunta funzione Solipa::round.
X-Git-Tag: Pre_EvolutionDataServer_2.32~4
X-Git-Url: https://saetta.ns0.it/gitweb?a=commitdiff_plain;h=5de90d00db1094a4e6b6fd7840f10fa0e9c43ad6;p=solipa%2Flibsolipa

Aggiunta funzione Solipa::round.
---

diff --git a/src/utils.c b/src/utils.c
index 6d27d44..cdfb92e 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -21,6 +21,7 @@
 #endif
 
 #include <errno.h>
+#include <math.h>
 
 #include <gio/gio.h>
 #include <gtk/gtk.h>
@@ -567,6 +568,23 @@ GDate
 	                       (GDateYear)tt_tm->tm_year + 1900);
 }
 
+gdouble
+solipa_round (gdouble value, guint n_decimals)
+{
+	gfloat elev;
+	gint i;
+	gfloat ret;
+
+	elev = pow (10.0, (gfloat)n_decimals);
+
+	ret = (value * elev) + 0.5;
+	i = (gint)ret;
+
+	ret = (gfloat)i / elev;
+
+	return ret;
+}
+
 /**
  * This function is copied from
  * http://bugzilla.gnome.org/show_bug.cgi?id=524831.
diff --git a/src/utils.h b/src/utils.h
index 6080ae0..3062590 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -49,6 +49,8 @@ gchar *solipa_format_money (gdouble number, gint decimals, gboolean with_currenc
 struct tm *solipa_get_now_tm (void);
 GDate *solipa_get_today_gdate (void);
 
+gdouble solipa_round (gdouble value, guint n_decimals);
+
 gchar *g_mkdtemp (gchar *tmpl);
 
 
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 4b9b506..457715f 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -12,4 +12,5 @@ LDADD = $(top_builddir)/src/libsolipa.la
 noinst_PROGRAMS = allegato \
                   mail \
                   utils \
-                  utils_format_money
+                  utils_format_money \
+                  utils_round
diff --git a/tests/utils_round.c b/tests/utils_round.c
new file mode 100644
index 0000000..2ca7a09
--- /dev/null
+++ b/tests/utils_round.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2010-2011 Andrea Zagli <azagli@libero.it>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <solipa.h>
+#include <utils.h>
+
+int
+main (int argc, char *argv[])
+{
+	gtk_init (&argc, &argv);
+
+	g_message ("%f", solipa_round (g_strtod (argv[1], NULL), 2));
+
+	return 0;
+}