Mesa (master): util: Updated u_format_tests to rigidly test half-float boundary values.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Fri Jun 29 11:24:23 UTC 2012
Module: Mesa
Branch: master
Commit: 60dca53833ee6ed39d75a24af3edb0b8ac3f7e0d
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=60dca53833ee6ed39d75a24af3edb0b8ac3f7e0d
Author: James Benton <jbenton at vmware.com>
Date: Tue May 22 14:55:18 2012 +0100
util: Updated u_format_tests to rigidly test half-float boundary values.
Reviewed-by: Jose Fonseca <jfonseca at vmware.com>
---
src/gallium/auxiliary/util/u_format_tests.c | 30 +++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/src/gallium/auxiliary/util/u_format_tests.c b/src/gallium/auxiliary/util/u_format_tests.c
index fc29d8d..afbd062 100644
--- a/src/gallium/auxiliary/util/u_format_tests.c
+++ b/src/gallium/auxiliary/util/u_format_tests.c
@@ -28,6 +28,7 @@
#include "u_memory.h"
#include "u_format_tests.h"
+#include <float.h>
/*
@@ -63,6 +64,9 @@
{{ 0, 0, 0, 0}, { 0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}}
+#define NAN (0.0 / 0.0)
+#define INF (1.0 / 0.0)
+
/**
* Test cases.
*
@@ -876,6 +880,32 @@ util_format_test_cases[] =
* Half float formats
*/
+ /* Minimum positive normal */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x0400), UNPACKED_1x1( 6.10352E-5, 0.0, 0.0, 1.0)},
+
+ /* Max denormal */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x03FF), UNPACKED_1x1( 6.09756E-5, 0.0, 0.0, 1.0)},
+
+ /* Minimum positive denormal */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x0001), UNPACKED_1x1( 5.96046E-8, 0.0, 0.0, 1.0)},
+
+ /* Min representable value */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0xfbff), UNPACKED_1x1( -65504.0, 0.0, 0.0, 1.0)},
+
+ /* Max representable value */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x7bff), UNPACKED_1x1( 65504.0, 0.0, 0.0, 1.0)},
+
+ /* NaNs */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x7c01), UNPACKED_1x1( NAN, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0xfc01), UNPACKED_1x1( -NAN, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x7fff), UNPACKED_1x1( NAN, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0xffff), UNPACKED_1x1( -NAN, 0.0, 0.0, 1.0)},
+
+ /* Inf */
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x7c00), UNPACKED_1x1( INF, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0xfc00), UNPACKED_1x1( -INF, 0.0, 0.0, 1.0)},
+
+ {PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x8000), UNPACKED_1x1( 0.0, 0.0, 0.0, 1.0)},
{PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x0000), UNPACKED_1x1( 0.0, 0.0, 0.0, 1.0)},
{PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0x3c00), UNPACKED_1x1( 1.0, 0.0, 0.0, 1.0)},
{PIPE_FORMAT_R16_FLOAT, PACKED_1x16(0xffff), PACKED_1x16(0xbc00), UNPACKED_1x1( -1.0, 0.0, 0.0, 1.0)},
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