add is_rosetta()

Author: scivision

+stdlib/is_rosetta.m

@@ -0,0 +1,15 @@
+function r = is_rosetta()
+% IS_ROSETTA Returns true if running on Apple Silicon using Rosetta (Matlab Intel binary)
+
+r = false;
+
+if ~ismac
+  return
+end
+
+% uname -m reports "x86_64" from within Matlab on Apple Silicon if using Rosetta
+
+[ret, raw] = system("sysctl -n sysctl.proc_translated");
+r = ret == 0 && startsWith(raw, "1");
+
+end

test/TestSys.m

@@ -26,6 +26,8 @@ function test_platform(tc)
 tc.verifyThat(stdlib.iswsl, IsOfClass('logical'))
 tc.verifyThat(stdlib.has_wsl, IsOfClass('logical'))
 
+tc.verifyThat(stdlib.is_rosetta, IsOfClass('logical'))
+
 tc.verifyThat(stdlib.isinteractive, IsOfClass('logical'))
 
 tc.verifyThat(stdlib.is_windows_powershell, IsOfClass('logical'))