simplify code for generating y axis labels a bit.

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@639 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_graph.c b/program/src/rrd_graph.c
index 7259eef6c7e4155fe474e518d75e90e770f92137..77a5051386fbf735fc7f251085fcfe329ea5969a 100644 (file)
--- a/program/src/rrd_graph.c
+++ b/program/src/rrd_graph.c
@@ -350,8 +350,6 @@ si_unit(
 
     im->viewfactor = im->magfact / pow((double)im->base , viewdigits);
 
-    pow((double)im->base , viewdigits);
-
     if ( ((viewdigits+symbcenter) < sizeof(symbol)) &&
                    ((viewdigits+symbcenter) >= 0) )
         im->symbol = symbol[(int)viewdigits+symbcenter];
@@ -1614,8 +1612,8 @@ int draw_horizontal_grid(image_desc_t *im)
     int sgrid = (int)( im->minval / im->ygrid_scale.gridstep - 1);
     int egrid = (int)( im->maxval / im->ygrid_scale.gridstep + 1);
     double MaxY;
-    scaledstep = im->ygrid_scale.gridstep/im->magfact;
-    MaxY = scaledstep*(double)im->viewfactor*(double)egrid;
+    scaledstep = im->ygrid_scale.gridstep/(double)im->magfact*(double)im->viewfactor;
+    MaxY = scaledstep*(double)egrid;
     for (i = sgrid; i <= egrid; i++){
        double Y0=ytr(im,im->ygrid_scale.gridstep*i);
        if ( Y0 >= im->yorigin-im->ysize
@@ -1623,23 +1621,23 @@ int draw_horizontal_grid(image_desc_t *im)
            if(i % im->ygrid_scale.labfact == 0){               
                if (im->symbol == ' ') {
                    if(im->extra_flags & ALTYGRID) {
-                       sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*im->viewfactor*i);
+                       sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*(double)i);
                     } else {
                         if(MaxY < 10) {
-                          sprintf(graph_label,"%4.1f",scaledstep*im->viewfactor*i);
+                          sprintf(graph_label,"%4.1f",scaledstep*(double)i);
                        } else {
-                          sprintf(graph_label,"%4.0f",scaledstep*im->viewfactor*i);
+                          sprintf(graph_label,"%4.0f",scaledstep*(double)i);
                        }
                     }
                }else {
                    char sisym = ( i == 0  ? ' ' : im->symbol);
                    if(im->extra_flags & ALTYGRID) {
-                       sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*im->viewfactor*i,sisym);
+                       sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*(double)i,sisym);
                     } else {
                        if(MaxY < 10){
-                         sprintf(graph_label,"%4.1f %c",scaledstep*im->viewfactor*i, sisym);
+                         sprintf(graph_label,"%4.1f %c",scaledstep*(double)i, sisym);
                        } else {
-                         sprintf(graph_label,"%4.0f %c",scaledstep*im->viewfactor*i, sisym);
+                         sprintf(graph_label,"%4.0f %c",scaledstep*(double)i, sisym);
                        }
                     }
                }