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ngspice
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use 'abs()'

This commit is contained in:
rlar 2016-06-13 19:42:37 +02:00
parent ae80067fef
commit aca1b3a374
1 changed files with 4 additions and 2 deletions
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6
src/frontend/plotting/grid.c
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@ -15,6 +15,8 @@ Modified: 2001 AlansFixes
#include "ngspice/grid.h"
#include "../display.h"
#include <stdlib.h>
#define RAD_TO_DEG (180.0 / M_PI)
typedef enum { x_axis, y_axis } Axis;
@ -1169,7 +1171,7 @@ drawsmithgrid(GRAPH *graph)
j *= 10;
while (mag < 20) {
i = (int)(j * pow(10.0, (double) mag) * pixperunit / 2);
if (i / 5 > gr_radius + ((xoff > 0) ? xoff : - xoff))
if (i / 5 > gr_radius + abs(xoff))
break;
rnorm[k] = j * pow(10.0, (double) (mag - basemag));
dphi[k] = 2.0 * atan(rnorm[k]);
@ -1252,7 +1254,7 @@ drawsmithgrid(GRAPH *graph)
if ((yoff > - gr_radius) && (yoff < gr_radius)) {
zheight = (int)(gr_radius * cos(asin((double) yoff / gr_radius)));
zheight = (zheight > 0) ? zheight : - zheight;
zheight = abs(zheight);
} else {
zheight = gr_radius;
}