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d80572ef73
o Add patch to avoid divide-by-zero trap o Merge patches for gnuplot-3.7.1 PR: 16120 Submitted by: Akio Morita <amorita@meadow.scphys.kyoto-u.ac.jp> Reviewed by: maintainer
65 lines
2.2 KiB
Plaintext
65 lines
2.2 KiB
Plaintext
# dynamic-contour-levels
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--- plot.h.ORIG Tue Oct 19 14:32:17 1999
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+++ plot.h Thu Dec 9 17:57:06 1999
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@@ -131,7 +131,6 @@
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#define LEVELS_AUTO 0 /* How contour levels are set */
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#define LEVELS_INCREMENTAL 1 /* user specified start & incremnet */
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#define LEVELS_DISCRETE 2 /* user specified discrete levels */
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-#define MAX_DISCRETE_LEVELS 30
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#define ANGLES_RADIANS 0
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#define ANGLES_DEGREES 1
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--- set.c.ORIG Thu Aug 19 15:36:35 1999
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+++ set.c Thu Dec 9 17:57:06 1999
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@@ -44,6 +44,7 @@
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#include "stdfn.h"
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#include "setshow.h"
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#include "national.h"
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+#include "alloc.h"
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#define DEF_FORMAT "%g" /* default format for tic mark labels */
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#define SIGNIF (0.01) /* less than one hundredth of a tic mark */
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@@ -198,7 +199,8 @@
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int contour_levels = 5;
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double zero = ZERO; /* zero threshold, not 0! */
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int levels_kind = LEVELS_AUTO;
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-double levels_list[MAX_DISCRETE_LEVELS]; /* storage for z levels to draw contours at */
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+double *levels_list; /* storage for z levels to draw contours at */
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+int max_levels = 0; /* contour level capacity, before enlarging */
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int dgrid3d_row_fineness = 10;
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int dgrid3d_col_fineness = 10;
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@@ -611,6 +613,10 @@
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else if (almost_equals(c_token, MIN)) { AUTO |= 1; ++c_token; } \
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else if (almost_equals(c_token, MAX)) { AUTO |= 2; ++c_token; }
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+ if (max_levels == 0)
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+ levels_list = (double *)gp_alloc((max_levels = 5)*sizeof(double),
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+ "contour levels");
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+
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if (almost_equals(c_token, "ar$row")) {
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c_token++;
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set_arrow();
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@@ -813,6 +819,10 @@
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if (!equals(c_token, ","))
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int_error("expecting comma to separate discrete levels", c_token);
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c_token++;
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+ if (i == max_levels)
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+ levels_list = gp_realloc(levels_list,
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+ (max_levels += 10)*sizeof(double),
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+ "contour levels");
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levels_list[i++] = real(const_express(&a));
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}
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contour_levels = i;
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--- setshow.h.ORIG Sat Oct 3 21:17:47 1998
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+++ setshow.h Thu Dec 9 17:57:06 1999
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@@ -169,7 +169,7 @@
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extern int contour_levels;
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extern double zero; /* zero threshold, not 0! */
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extern int levels_kind;
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-extern double levels_list[MAX_DISCRETE_LEVELS];
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+extern double *levels_list;
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extern int dgrid3d_row_fineness;
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extern int dgrid3d_col_fineness;
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