Add roundings for varying double in knc.h and knl.h

tests/test-149.ispc

@@ -0,0 +1,12 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_f(uniform float RET[], uniform float aFOO[]) {
+    double a = aFOO[programIndex]; 
+    RET[programIndex] = round(a+.49999); 
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 1 + (double) programIndex;
+}

tests/test-150.ispc

@@ -0,0 +1,12 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_f(uniform float RET[], uniform float aFOO[]) {
+    double a = aFOO[programIndex]; 
+    RET[programIndex] = round(a+(0.50001d));
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = programIndex + 2;
+}

tests/test-151.ispc

@@ -0,0 +1,12 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_f(uniform float RET[], uniform float aFOO[]) {
+    double a = aFOO[programIndex]; 
+    RET[programIndex] = floor(a+.99999); 
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 1 +(double) programIndex;
+}

tests/test-152.ispc

@@ -0,0 +1,12 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_f(uniform float RET[], uniform float aFOO[]) {
+    double a = aFOO[programIndex]; 
+    RET[programIndex] = ceil(a-1e-5); 
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 1 + (double) programIndex;
+}

tests/test-153.ispc

@@ -0,0 +1,12 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_f(uniform float RET[], uniform float aFOO[]) {
+    double a = aFOO[programIndex]; 
+    RET[programIndex] = ceil(-a+1e-5); 
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = - (double) programIndex;
+}