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grid.c: prevent crash if real low and high values are close

This commit is contained in:
h_vogt 2012-09-26 20:58:58 +02:00
parent 68c4de76b7
commit 0bdc33db40
1 changed files with 2 additions and 4 deletions
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6
src/frontend/plotting/plotit.c
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@ -842,13 +842,11 @@ plotit(wordlist *wl, char *hcopy, char *devname)
ylims[1] = ylims[0]; ylims[1] = ylims[0];
ylims[0] = tt; ylims[0] = tt;
} }
if (xlims[0] == xlims[1]) { if (AlmostEqualUlps(xlims[0], xlims[1], 10)) {
xlims[0] *= (xlims[0] > 0) ? 0.9 : 1.1; xlims[0] *= (xlims[0] > 0) ? 0.9 : 1.1;
xlims[1] *= (xlims[1] > 0) ? 1.1 : 0.9; xlims[1] *= (xlims[1] > 0) ? 1.1 : 0.9;
} }
if (ylims[0] == ylims[1]) { if (AlmostEqualUlps(ylims[0], ylims[1], 10)) {
/* || fabs(ylims[0])/(ylims[1]-ylims[0]) > 1.0e9
|| fabs(ylims[1])/(ylims[1]-ylims[0]) > 1.0e9) */
ylims[0] *= (ylims[0] > 0) ? 0.9 : 1.1; ylims[0] *= (ylims[0] > 0) ? 0.9 : 1.1;
ylims[1] *= (ylims[1] > 0) ? 1.1 : 0.9; ylims[1] *= (ylims[1] > 0) ? 1.1 : 0.9;
} }