[Piglit] [PATCH] arb_gpu_shader_fp64: relax ldexp test due to denorms

[Nicolai Hähnle]

From: Nicolai Hähnle <nicolai.haehnle at amd.com>

ldexp(0.5, -1028) will be different from 0.0 on implementations that
support denorms. Simply crank up the exponents to exclude the possibility
of denorms.
---
 .../execution/built-in-functions/fs-ldexp-dvec4.shader_test       | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-ldexp-dvec4.shader_test b/tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-ldexp-dvec4.shader_test
index c0e60b97b..38214dee6 100644
--- a/tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-ldexp-dvec4.shader_test
+++ b/tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/fs-ldexp-dvec4.shader_test
@@ -85,25 +85,21 @@ probe rgba 4 0 0.0 0.0 0.0 0.0
 # Test DBL_MIN (2.2250738585072014E-308) and DBL_MAX (1.7976931348623157E+308) as inputs.
 uniform dvec4 expected_double 0.5 -0.5 0.99999999999999989 -0.99999999999999989
 uniform dvec4 given_double 2.2250738585072014E-308 -2.2250738585072014E-308 1.7976931348623157E+308 -1.7976931348623157E+308
 uniform ivec4 given_exponent 1021 1021 -1024 -1024
 draw arrays GL_TRIANGLE_FAN 0 4
 probe rgba 5 0 0.0 0.0 0.0 0.0
 
 # Test underflow generates zero with sign of x.
 uniform dvec4 expected_double 0.0 -0.0 0.0 -0.0
 uniform dvec4 given_double 0.0 -0.0 0.5 -0.5
-uniform ivec4 given_exponent -1028 -1028 -1028 -1028
+uniform ivec4 given_exponent -1028 -1028 -1078 -1078
 draw arrays GL_TRIANGLE_FAN 0 4
 probe rgba 6 0 0.0 0.0 0.0 0.0
 
 uniform dvec4 expected_double 0.0 -0.0 0.0 -0.0
 uniform dvec4 given_double 2.2250738585072014E-308 -2.2250738585072014E-308 1.7976931348623157E+308 -1.7976931348623157E+308
-# For the FLT_MAX case -255 comes from (-127 + -127 + -1).
-#   ldexp(FLT_MAX, -127)           = 0x1.fffffep+0 (1.999999881)
-#   ldexp(FLT_MAX, -127 - 127)     = 0x1p-126 (epsilon above FLT_MIN)
-#   ldexp(FLT_MAX, -127 - 127 - 1) = 0.0
-uniform ivec4 given_exponent -1 -1 -2048 -2048
+uniform ivec4 given_exponent -53 -53 -2100 -2100
 draw arrays GL_TRIANGLE_FAN 0 4
 probe rgba 7 0 0.0 0.0 0.0 0.0
 
 # Overflow is undefined according to the GLSL spec, so nothing to test.
-- 
2.11.0