From 1cbbafd8b1ce139c03f27d86117f874efa6e31d5 Mon Sep 17 00:00:00 2001
From: Peter Limkilde Svendsen <peter.limkilde@gmail.com>
Date: Fri, 6 Sep 2024 19:26:33 +0200
Subject: [PATCH] Fix little-endian-specific endian.h tests
---
tests/endian.c | 54 +++++++++++++++++++++++++++++++++-----------------
1 file changed, 36 insertions(+), 18 deletions(-)
diff --git a/tests/endian.c b/tests/endian.c
index 271f1060..951b4393 100644
--- a/tests/endian.c
+++ b/tests/endian.c
@@ -4,6 +4,18 @@
#include "test_helpers.h"
+void to_be(uintmax_t in, uint8_t *out, size_t size) {
+ for (size_t i = 0; i < size; i++) {
+ out[i] = (in >> 8*(size - 1 - i)) & 0xff;
+ }
+}
+
+void to_le(uintmax_t in, uint8_t *out, size_t size) {
+ for (size_t i = 0; i < size; i++) {
+ out[i] = (in >> 8*i) & 0xff;
+ }
+}
+
int main() {
uint16_t zero_u16 = 0;
assert(be16toh(zero_u16) == zero_u16);
@@ -11,12 +23,14 @@ int main() {
assert(htole16(zero_u16) == zero_u16);
assert(le16toh(zero_u16) == zero_u16);
- uint16_t value_be_u16 = 0x0123;
- uint16_t value_le_u16 = 0x2301;
- assert(be16toh(value_be_u16) == value_le_u16);
- assert(htobe16(value_le_u16) == value_be_u16);
- assert(htole16(value_le_u16) == value_le_u16);
- assert(le16toh(value_le_u16) == value_le_u16);
+ uint16_t u16_ne = 0x0123;
+ uint16_t u16_be, u16_le;
+ to_be(u16_ne, (uint8_t *)&u16_be, sizeof(uint16_t));
+ to_le(u16_ne, (uint8_t *)&u16_le, sizeof(uint16_t));
+ assert(be16toh(u16_be) == u16_ne);
+ assert(htobe16(u16_ne) == u16_be);
+ assert(htole16(u16_ne) == u16_le);
+ assert(le16toh(u16_le) == u16_ne);
uint32_t zero_u32 = 0;
assert(be32toh(zero_u32) == zero_u32);
@@ -24,12 +38,14 @@ int main() {
assert(htole32(zero_u32) == zero_u32);
assert(le32toh(zero_u32) == zero_u32);
- uint32_t value_be_u32 = 0x01234567;
- uint32_t value_le_u32 = 0x67452301;
- assert(be32toh(value_be_u32) == value_le_u32);
- assert(htobe32(value_le_u32) == value_be_u32);
- assert(htole32(value_le_u32) == value_le_u32);
- assert(le32toh(value_le_u32) == value_le_u32);
+ uint32_t u32_ne = 0x01234567;
+ uint32_t u32_be, u32_le;
+ to_be(u32_ne, (uint8_t *)&u32_be, sizeof(uint32_t));
+ to_le(u32_ne, (uint8_t *)&u32_le, sizeof(uint32_t));
+ assert(be32toh(u32_be) == u32_ne);
+ assert(htobe32(u32_ne) == u32_be);
+ assert(htole32(u32_ne) == u32_le);
+ assert(le32toh(u32_le) == u32_ne);
uint64_t zero_u64 = 0;
assert(be64toh(zero_u64) == zero_u64);
@@ -37,10 +53,12 @@ int main() {
assert(htole64(zero_u64) == zero_u64);
assert(le64toh(zero_u64) == zero_u64);
- uint64_t value_be_u64 = 0x0123456789ABCDEF;
- uint64_t value_le_u64 = 0xEFCDAB8967452301;
- assert(be64toh(value_be_u64) == value_le_u64);
- assert(htobe64(value_le_u64) == value_be_u64);
- assert(htole64(value_le_u64) == value_le_u64);
- assert(le64toh(value_le_u64) == value_le_u64);
+ uint64_t u64_ne = 0x0123456789ABCDEF;
+ uint64_t u64_be, u64_le;
+ to_be(u64_ne, (uint8_t *)&u64_be, sizeof(uint64_t));
+ to_le(u64_ne, (uint8_t *)&u64_le, sizeof(uint64_t));
+ assert(be64toh(u64_be) == u64_ne);
+ assert(htobe64(u64_ne) == u64_be);
+ assert(htole64(u64_ne) == u64_le);
+ assert(le64toh(u64_le) == u64_ne);
}
--
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