feat(shortint): add support for small LWE key encryption

scripts/c_api_tests.sh

@@ -48,4 +48,12 @@ if [[ "${BUILD_ONLY}" == "1" ]]; then
     exit 0
 fi
 
-make "test"
+nproc_bin=nproc
+
+# macOS detects CPUs differently
+if [[ $(uname) == "Darwin" ]]; then
+    nproc_bin="sysctl -n hw.logicalcpu"
+fi
+
+# Let's go parallel
+ARGS="-j$("${nproc_bin}")" make test