add sys.cpu_count

Author: scivision

+stdlib/+sys/cpu_count.m

@@ -0,0 +1,10 @@
+function N = cpu_count
+%CPU_COUNT how many CPUs
+N = maxNumCompThreads;
+if N < 2  % happens on some HPC
+  N = feature('NumCores');
+end
+
+% logical CPUs
+% N=java.lang.Runtime.getRuntime().availableProcessors();
+end

test/TestSys.m

@@ -53,7 +53,13 @@ function test_ram(tc)
 
 end
 
-function test_cpu(tc)
+function test_cpu_count(tc)
+
+tc.verifyGreaterThan(stdlib.sys.cpu_count(), 0)
+
+end
+
+function test_cpu_load(tc)
 
 tc.verifyGreaterThanOrEqual(stdlib.sys.cpu_load(), 0)