Implement aslax7/shlax7/asrax7/shrax7

test/val/lib_runtime_shlax7.c

@@ -0,0 +1,44 @@
+/*
+  !!DESCRIPTION!! A small test for shlax7.
+  !!ORIGIN!!
+  !!LICENCE!!
+  !!AUTHOR!!
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <errno.h>
+
+int main (void)
+{
+    unsigned int ai = 0, ti, refi;
+    unsigned char ac = 0, tc, refc;
+
+    do {
+      refi = ai << 4;
+      refi = refi << 3;
+
+      ti   = ai << 7;
+
+      if (ti != refi) {
+        printf("wrong result on int %u << 7: %04X, expected %04X\n", ai, ti, refi);
+        return 1;
+      }
+    } while (ai != 0);
+
+    do {
+      refc = ac << 4;
+      refc = refc << 3;
+
+      tc   = ac << 7;
+
+      if (tc != refc) {
+        printf("wrong result on char %u << 7: %04X, expected %04X\n", ac, tc, refc);
+        return 1;
+      }
+    } while (ac != 0);
+
+    return 0;
+}