[NFC] math_brute_force: move TestInfoBase to common.h (#2059)

The various forms of `TestInfoBase` have many members in common, so
avoid duplicating the struct definition and move it to `common.h`.

Provide a description and initializer for every struct member, and drop
initializations done with `memset`.

Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>

test_conformance/math_brute_force/unary_half.cpp

@@ -45,26 +45,8 @@ typedef struct ThreadInfo
         tQueue; // per thread command queue to improve performance
 } ThreadInfo;
 
-struct TestInfoBase
-{
-    size_t subBufferSize; // Size of the sub-buffer in elements
-    const Func *f; // A pointer to the function info
-    cl_uint threadCount; // Number of worker threads
-    cl_uint jobCount; // Number of jobs
-    cl_uint step; // step between each chunk and the next.
-    cl_uint scale; // stride between individual test values
-    float ulps; // max_allowed ulps
-    int ftz; // non-zero if running in flush to zero mode
-
-    int isRangeLimited; // 1 if the function is only to be evaluated over a
-                        // range
-    float half_sin_cos_tan_limit;
-};
-
 struct TestInfo : public TestInfoBase
 {
-    TestInfo(const TestInfoBase &base): TestInfoBase(base) {}
-
     // Array of thread specific information
     std::vector<ThreadInfo> tinfo;
 
@@ -351,7 +333,6 @@ cl_int TestHalf(cl_uint job_id, cl_uint thread_id, void *data)
 
 int TestFunc_Half_Half(const Func *f, MTdata d, bool relaxedMode)
 {
-    TestInfoBase test_info_base;
     cl_int error;
     size_t i, j;
     float maxError = 0.0f;
@@ -360,8 +341,7 @@ int TestFunc_Half_Half(const Func *f, MTdata d, bool relaxedMode)
     logFunctionInfo(f->name, sizeof(cl_half), relaxedMode);
 
     // Init test_info
-    memset(&test_info_base, 0, sizeof(test_info_base));
-    TestInfo test_info(test_info_base);
+    TestInfo test_info;
 
     test_info.threadCount = GetThreadCount();