random: use smaller data fields where appropriate

    text           data     bss     dec     hex filename
-    130            156       0     286     11e libc/stdlib/random.o
+    130            148       0     278     116 libc/stdlib/random.o
-    586              0       0     586     24a libc/stdlib/random_r.o
+    570              0       0     570     23a libc/stdlib/random_r.o

1 files changed, 4 insertions, 3 deletions

diff --git a/include/stdlib.h b/include/stdlib.h
index 9112a95c4..87b284639 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -347,9 +347,10 @@ struct random_data
     int32_t *fptr;		/* Front pointer.  */
     int32_t *rptr;		/* Rear pointer.  */
     int32_t *state;		/* Array of state values.  */
-    int rand_type;		/* Type of random number generator.  */
-    int rand_deg;		/* Degree of random number generator.  */
-    int rand_sep;		/* Distance between front and rear.  */
+    /* random_r.c, TYPE_x, DEG_x, SEP_x - small enough for int8_t */
+    int8_t rand_type;		/* Type of random number generator.  */
+    int8_t rand_deg;		/* Degree of random number generator.  */
+    int8_t rand_sep;		/* Distance between front and rear.  */
     int32_t *end_ptr;		/* Pointer behind state table.  */
   };