Make ARB_shader_precision tests ignore 0.0 vs -0.0.

The multiplication precision tests were attempting to multiply
0.0 * -0.1 and expecting to get +0.0 (0x00000000), and failing
if they received -0.0 (0x80000000).  This seems fairly bogus.

According to the ARB_shader_precision specification:
"In general, correct signedness of 0 is not required."

To avoid this problem, remove the sign bit from both the results
and expected values when the value is equal to (+/-) 0.0.

v2: Use xs.dtype.type(0.0) (suggested by Dylan Baker).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Acked-by: Matt Turner <mattst88@gmail.com>

0 files changed, 0 insertions, 0 deletions