llvmpipe/tests: update arith test to check for edge cases

Test infs, zeros and nans with our arith functions to assure
correct/defined behavior with those values.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

src/gallium/drivers/llvmpipe/lp_test_arit.c

@@ -108,6 +108,7 @@ static float sgnf(float x)
 
 
 const float exp2_values[] = {
+   -INFINITY,
    -60,
    -4,
    -2,
@@ -122,7 +123,9 @@ const float exp2_values[] = {
    1, 
    2, 
    4, 
-   60
+   60,
+   INFINITY,
+   NAN
 };
 
 
@@ -134,6 +137,8 @@ const float log2_values[] = {
     */
    1.4012984643248171e-45,
 #endif
+   -INFINITY,
+   0,
    1e-007,
    0.1,
    0.5,
@@ -146,7 +151,9 @@ const float log2_values[] = {
    2,
    4,
    100000,
-   1e+018
+   1e+018,
+   INFINITY,
+   NAN
 };
 
 
@@ -190,17 +197,20 @@ const float rsqrt_values[] = {
 
 
 const float sincos_values[] = {
+   -INFINITY,
    -5*M_PI/4,
    -4*M_PI/4,
    -4*M_PI/4,
    -3*M_PI/4,
    -2*M_PI/4,
    -1*M_PI/4,
-    1*M_PI/4,
-    2*M_PI/4,
-    3*M_PI/4,
-    4*M_PI/4,
-    5*M_PI/4,
+   1*M_PI/4,
+   2*M_PI/4,
+   3*M_PI/4,
+   4*M_PI/4,
+   5*M_PI/4,
+   INFINITY,
+   NAN
 };
 
 const float round_values[] = {
@@ -263,9 +273,9 @@ static const struct unary_test_t
 unary_tests[] = {
    {"neg", &lp_build_negate, &negf, exp2_values, Elements(exp2_values), 20.0 },
    {"exp2", &lp_build_exp2, &exp2f, exp2_values, Elements(exp2_values), 20.0 },
-   {"log2", &lp_build_log2, &log2f, log2_values, Elements(log2_values), 20.0 },
+   {"log2", &lp_build_log2_safe, &log2f, log2_values, Elements(log2_values), 20.0 },
    {"exp", &lp_build_exp, &expf, exp2_values, Elements(exp2_values), 18.0 },
-   {"log", &lp_build_log, &logf, log2_values, Elements(log2_values), 20.0 },
+   {"log", &lp_build_log_safe, &logf, log2_values, Elements(log2_values), 20.0 },
    {"rcp", &lp_build_rcp, &rcpf, rcp_values, Elements(rcp_values), 20.0 },
    {"rsqrt", &lp_build_rsqrt, &rsqrtf, rsqrt_values, Elements(rsqrt_values), 20.0 },
    {"sin", &lp_build_sin, &sinf, sincos_values, Elements(sincos_values), 20.0 },