add cpu_arch(), os_version()

Author: scivision

+stdlib/cpu_arch.m

@@ -0,0 +1,7 @@
+%% CPU_ARCH get the CPU architecture
+
+function arch = cpu_arch()
+
+arch = javaSystemProperty("os.arch");
+
+end

+stdlib/os_version.m

@@ -0,0 +1,12 @@
+%% OS_VERSION Get operating system name and version.
+%
+% Note: for Windows 11, need new-enough Java version to show Windows 11
+% instead of Windows 10.
+% Ref: https://bugs.openjdk.org/browse/JDK-8274840
+
+function [os, version] = os_version()
+
+os = javaSystemProperty("os.name");
+version = javaSystemProperty("os.version");
+
+end

test/TestJava.m

@@ -50,6 +50,17 @@ function test_java_api(tc)
 tc.verifyGreaterThanOrEqual(v, 8, "Java API >= 8 is required for Matlab-stdlib")
 end
 
+function test_cpu_arch(tc)
+arch = stdlib.cpu_arch();
+tc.verifyNotEmpty(arch)
+end
+
+function test_os_version(tc)
+[os, ver] = stdlib.os_version();
+tc.verifyNotEmpty(os)
+tc.verifyNotEmpty(ver)
+end
+
 
 function test_hard_link_count(tc)
 fn = mfilename("fullpath") + ".m";