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Disable some image comparison tests on architectures such as i686
where intermediate floating-point operations are done with 80-bit long
doubles, and typically later rounded to 64-bit doubles. This double
rounding causes small differences in the resulting pixel values
compared with other architectures, causing the image comparisons to
fail.
Patch by Mark H Weaver <mhw@netris.org>.
diff -ru libgd-2.2.3.orig/tests/gdimagecopyresampled/basic_alpha.c libgd-2.2.3/tests/gdimagecopyresampled/basic_alpha.c
--- libgd-2.2.3.orig/tests/gdimagecopyresampled/basic_alpha.c 2016-07-21 04:06:42.000000000 -0400
+++ libgd-2.2.3/tests/gdimagecopyresampled/basic_alpha.c 2016-07-29 13:50:56.214877446 -0400
@@ -1,5 +1,6 @@
/* Testing basic gdImageCopyResampled() functionality with alpha channel */
+#include <float.h>
#include "gd.h"
#include "gdtest.h"
@@ -33,7 +34,8 @@
gdImageCopyResampled(copy, im, 0,0, 0,0, 200,200, 400,300);
gdImageDestroy(im);
- gdAssertImageEqualsToFile("gdimagecopyresampled/basic_alpha_exp.png", copy);
+ if (FLT_EVAL_METHOD != 2)
+ gdAssertImageEqualsToFile("gdimagecopyresampled/basic_alpha_exp.png", copy);
gdImageDestroy(copy);
return gdNumFailures();
diff -ru libgd-2.2.3.orig/tests/gdimagecopyresampled/bug00201.c libgd-2.2.3/tests/gdimagecopyresampled/bug00201.c
--- libgd-2.2.3.orig/tests/gdimagecopyresampled/bug00201.c 2016-07-21 04:06:42.000000000 -0400
+++ libgd-2.2.3/tests/gdimagecopyresampled/bug00201.c 2016-07-29 13:50:30.638559003 -0400
@@ -1,3 +1,4 @@
+#include <float.h>
#include "gd.h"
#include "gdtest.h"
@@ -65,7 +66,8 @@
gdImageDestroy(background);
gdImageDestroy(scaled_logo);
- gdAssertImageEqualsToFile("gdimagecopyresampled/bug00201_exp.png", img);
+ if (FLT_EVAL_METHOD != 2)
+ gdAssertImageEqualsToFile("gdimagecopyresampled/bug00201_exp.png", img);
gdImageDestroy(img);
return gdNumFailures();
}
diff -ru libgd-2.2.3.orig/tests/gdimagerotate/bug00067.c libgd-2.2.3/tests/gdimagerotate/bug00067.c
--- libgd-2.2.3.orig/tests/gdimagerotate/bug00067.c 2016-06-18 05:42:16.000000000 -0400
+++ libgd-2.2.3/tests/gdimagerotate/bug00067.c 2016-07-29 13:50:07.566271765 -0400
@@ -1,5 +1,6 @@
#include <stdio.h>
#include <stdlib.h>
+#include <float.h>
#include "gd.h"
#include "gdtest.h"
@@ -43,7 +44,7 @@
sprintf(filename, "bug00067_%03d_exp.png", angle);
path = gdTestFilePath2("gdimagerotate", filename);
- if (!gdAssertImageEqualsToFile(path, exp)) {
+ if (FLT_EVAL_METHOD != 2 && !gdAssertImageEqualsToFile(path, exp)) {
gdTestErrorMsg("comparing rotated image to %s failed.\n", path);
error += 1;
}
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