[Piglit] [PATCH] cl: Add signbit(float) relational tests

[Aaron Watry]

Also, while doing this, needed to add a NEGNAN define to genclbuiltins.py because
python just prints nan for float("-nan") when generating tests.

cl-program-tester can handle -nan as an input correctly, so just pass the value
through as a string without python attempting to handle it.

v2: Add nan and -nan tests

Signed-off-by: Aaron Watry <awatry at gmail.com>
CC: Tom Stellard <thomas.stellard at amd.com>
---
 generated_tests/genclbuiltins.py                   |  3 +++
 generated_tests/generate-cl-relational-builtins.py | 11 ++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/generated_tests/genclbuiltins.py b/generated_tests/genclbuiltins.py
index 2d2b322..9173cdb 100644
--- a/generated_tests/genclbuiltins.py
+++ b/generated_tests/genclbuiltins.py
@@ -56,6 +56,7 @@ UMAX = 'unsigned_max_for_type'
 TYPE = 'TYPE'
 SIZE = 'SIZE'
 TRUE = 'true_value_for_type' #1 for scalar, -1 for vector
+NEGNAN = 'Negative NAN as a string, because float("-nan") just produces nan'
 
 # Identity type list
 T = {
@@ -234,6 +235,8 @@ def getValue(type, val, isVector):
                 return -1
             else:
                 return 1
+        elif (val == NEGNAN):
+            return '-nan' #cl-program-tester translates this for us
         else:
             print('Unknown string value: ' + val + '\n')
     elif (isinstance(val, list)):
diff --git a/generated_tests/generate-cl-relational-builtins.py b/generated_tests/generate-cl-relational-builtins.py
index dd9bc35..db7b7f5 100644
--- a/generated_tests/generate-cl-relational-builtins.py
+++ b/generated_tests/generate-cl-relational-builtins.py
@@ -27,7 +27,7 @@
 
 import os
 
-from genclbuiltins import gen, TRUE
+from genclbuiltins import gen, TRUE, NEGNAN
 
 CLC_VERSION_MIN = {
     'isnan' : 10,
@@ -35,6 +35,7 @@ CLC_VERSION_MIN = {
     'isgreater' : 10,
     'isgreaterequal' : 10,
     'isnotequal' : 10,
+    'signbit' : 10
 }
 
 DATA_TYPES = ['float']
@@ -91,6 +92,14 @@ tests = {
             [0.0,  float("nan"), 1.0,  1,            float("nan"), float("inf"), 1.0,  0.5 ], # Arg0
             [0.0,  float("nan"), 1.0,  float("nan"), 1,            float("inf"), 0.5,  1.0 ]  # Arg1
         ]
+    },
+    'signbit' : {
+        'arg_types': [I, F],
+        'function_type': 'ttt',
+        'values': [
+            [0,   TRUE,        0,   0, TRUE,          0,            TRUE, 0           , TRUE    ], # Result
+            [0.0, float(0)*-1, 1.0, 1, float("-inf"), float("inf"), -1.0, float("nan"), NEGNAN ]  # Arg0
+        ]
     }
 }
 
-- 
1.9.1