Use internal endian tool

src/asset/type/assettexture.c

@@ -9,6 +9,7 @@
 #include "asset/assettype.h"
 #include "assert/assert.h"
 #include "display/texture.h"
+#include "util/endian.h"
 
 errorret_t assetTextureLoad(assetentire_t entire) {
   assertNotNull(entire.data, "Data pointer cannot be NULL.");
@@ -32,8 +33,8 @@ errorret_t assetTextureLoad(assetentire_t entire) {
   }
 
   // Fix endian
-  assetData->width = le32toh(assetData->width);
-  assetData->height = le32toh(assetData->height);
+  assetData->width = endianLittleToHost32(assetData->width);
+  assetData->height = endianLittleToHost32(assetData->height);
 
   // Check dimensions.
   if(

src/asset/type/assettileset.c

@@ -9,6 +9,7 @@
 #include "assert/assert.h"
 #include "display/tileset/tileset.h"
 #include "util/memory.h"
+#include "util/endian.h"
 
 errorret_t assetTilesetLoad(assetentire_t entire) {
   assertNotNull(entire.data, "Asset data cannot be null");
@@ -30,12 +31,12 @@ errorret_t assetTilesetLoad(assetentire_t entire) {
   }
 
   // Fix endianness
-  tilesetData->tileWidth = le16toh(tilesetData->tileWidth);
-  tilesetData->tileHeight = le16toh(tilesetData->tileHeight);
-  tilesetData->columnCount = le16toh(tilesetData->columnCount);
-  tilesetData->rowCount = le16toh(tilesetData->rowCount);
-  tilesetData->right = le16toh(tilesetData->right);
-  tilesetData->bottom = le16toh(tilesetData->bottom);
+  tilesetData->tileWidth = endianLittleToHost16(tilesetData->tileWidth);
+  tilesetData->tileHeight = endianLittleToHost16(tilesetData->tileHeight);
+  tilesetData->columnCount = endianLittleToHost16(tilesetData->columnCount);
+  tilesetData->rowCount = endianLittleToHost16(tilesetData->rowCount);
+  tilesetData->right = endianLittleToHost16(tilesetData->right);
+  tilesetData->bottom = endianLittleToHost16(tilesetData->bottom);
 
   if(tilesetData->tileWidth == 0) {
     errorThrow("Tile width cannot be 0");
@@ -50,18 +51,8 @@ errorret_t assetTilesetLoad(assetentire_t entire) {
     errorThrow("Row count cannot be 0");
   }
 
-  uint32_t temp;
-  memoryCopy(&temp, &tilesetData->u0, sizeof(float_t));
-  temp = le32toh(temp);
-  memoryCopy(&tilesetData->u0, &temp, sizeof(float_t));
-
-  if(tilesetData->u0 < 0.0f || tilesetData->u0 > 1.0f) {
-    errorThrow("Invalid u0 value in tileset");
-  }
-
-  memoryCopy(&temp, &tilesetData->v0, sizeof(float_t));
-  temp = le32toh(temp);
-  memoryCopy(&tilesetData->v0, &temp, sizeof(float_t));
+  tilesetData->u0 = endianLittleToHostFloat(tilesetData->u0);
+  tilesetData->v0 = endianLittleToHostFloat(tilesetData->v0);
 
   if(tilesetData->v0 < 0.0f || tilesetData->v0 > 1.0f) {
     errorThrow("Invalid v0 value in tileset");

src/dusk.h

@@ -33,11 +33,6 @@
   #include <ogcsys.h>
   #include <gccore.h>
   #include <malloc.h>
-  #include <sys/endian.h>
-#else
-  #ifndef le32toh
-    #define le32toh(x) (x)
-  #endif
 #endif
 
 typedef bool bool_t;

src/util/CMakeLists.txt

@@ -7,6 +7,7 @@
 target_sources(${DUSK_LIBRARY_TARGET_NAME}
   PUBLIC
     array.c
+    endian.c
     memory.c
     string.c
     math.c

src/util/endian.c

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "util/endian.h"
+#include "util/memory.h"
+
+bool_t isHostLittleEndian(void) {
+  uint32_t value = ENDIAN_MAGIC;
+  uint8_t *bytePtr = (uint8_t *)&value;
+  return bytePtr[0] == 0x04;
+}
+
+uint32_t endianLittleToHost32(uint32_t value) {
+  if(isHostLittleEndian()) {
+    return value;
+  }
+
+  return (
+    ((value & 0x000000FF) << 24) |
+    ((value & 0x0000FF00) <<  8) |
+    ((value & 0x00FF0000) >>  8) |
+    ((value & 0xFF000000) >> 24)
+  );
+}
+
+uint16_t endianLittleToHost16(uint16_t value) {
+  if(isHostLittleEndian()) {
+    return value;
+  }
+  return (uint16_t)(((value & 0x00FF) << 8) |
+                    ((value & 0xFF00) >> 8));
+}
+
+uint64_t endianLittleToHost64(uint64_t value) {
+  if(isHostLittleEndian()) {
+    return value;
+  }
+  return (
+    ((value & 0x00000000000000FFULL) << 56) |
+    ((value & 0x000000000000FF00ULL) << 40) |
+    ((value & 0x0000000000FF0000ULL) << 24) |
+    ((value & 0x00000000FF000000ULL) << 8)  |
+    ((value & 0x000000FF00000000ULL) >> 8)  |
+    ((value & 0x0000FF0000000000ULL) >> 24) |
+    ((value & 0x00FF000000000000ULL) >> 40) |
+    ((value & 0xFF00000000000000ULL) >> 56)
+  );
+}
+
+float_t endianLittleToHostFloat(float_t value) {
+  if(isHostLittleEndian()) {
+    return value;
+  }
+
+  uint32_t temp;
+  float_t result;
+  memoryCopy(&temp, &value, sizeof(uint32_t));
+  temp = endianLittleToHost32(temp);
+  memoryCopy(&result, &temp, sizeof(uint32_t));
+  
+  return result;
+}
+

src/util/endian.h

@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+static const uint32_t ENDIAN_MAGIC = 0x01020304;
+
+/**
+ * Checks if the host system is little-endian.
+ * 
+ * @return true if the host is little-endian, false otherwise.
+ */
+bool_t isHostLittleEndian(void);
+
+/**
+ * Converts a 32-bit integer from little-endian to host byte order.
+ * 
+ * @param value The little-endian value to convert.
+ * @return The value in host byte order.
+ */
+uint32_t endianLittleToHost32(uint32_t value);
+
+/**
+ * Converts a 16-bit integer from little-endian to host byte order.
+ * @param value The little-endian value to convert.
+ * @return The value in host byte order.
+ */
+uint16_t endianLittleToHost16(uint16_t value);
+
+/**
+ * Converts a 64-bit integer from little-endian to host byte order.
+ * @param value The little-endian value to convert.
+ * @return The value in host byte order.
+ */
+uint64_t endianLittleToHost64(uint64_t value);
+
+/**
+ * Converts a float from little-endian to host byte order.
+ * 
+ * @param value The little-endian value to convert.
+ * @return The value in host byte order.
+ */
+float_t endianLittleToHostFloat(float_t value);