From b60cb1fb00f97801dc3ac3adab08febd918a5681 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <imuwoto@gmail.com>
Date: Fri, 2 Aug 2024 00:27:14 +0900
Subject: [PATCH] valtype.h: change the way to define constants

no functional changes are intended.
---
 lib/valtype.h | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/valtype.h b/lib/valtype.h
index 10a38a5e..b262fa84 100644
--- a/lib/valtype.h
+++ b/lib/valtype.h
@@ -6,20 +6,22 @@
  * they can be distinguished from typeidx in eg. block types.
  */
 
+#define _S7(x) (0x7f & (uint8_t)(x))
+
 enum valtype {
         /* numtype */
-        TYPE_i32 = 0x7f, /* -0x01 */
-        TYPE_i64 = 0x7e, /* -0x02 */
-        TYPE_f32 = 0x7d, /* -0x03 */
-        TYPE_f64 = 0x7c, /* -0x04 */
+        TYPE_i32 = _S7(-0x01),
+        TYPE_i64 = _S7(-0x02),
+        TYPE_f32 = _S7(-0x03),
+        TYPE_f64 = _S7(-0x04),
 
         /* vectype */
-        TYPE_v128 = 0x7b, /* -0x05 */
+        TYPE_v128 = _S7(-0x05),
 
         /* reftype */
-        TYPE_EXNREF = 0x69,    /* -0x17 */
-        TYPE_FUNCREF = 0x70,   /* -0x10 */
-        TYPE_EXTERNREF = 0x6f, /* -0x11 */
+        TYPE_EXNREF = _S7(-0x17),
+        TYPE_FUNCREF = _S7(-0x10),
+        TYPE_EXTERNREF = _S7(-0x11),
 
         /* pseudo types for validation logic */
         TYPE_ANYREF = 0xfe, /* any reftype */