Bemanitools v5.26 release

2019-09-27 22:36:50 +02:00
commit cbd7720349
718 changed files with 62731 additions and 0 deletions
@@ -0,0 +1,83 @@
+#include <stddef.h>
+#include <stdint.h>
+
+uint8_t crc8(const void *ptr, size_t nbytes, uint8_t in)
+{
+    const uint8_t *bytes;
+    uint8_t crc;
+    size_t i;
+    size_t j;
+
+    //log_assert(ptr != NULL);
+
+    bytes = ptr;
+    crc = ~in;
+
+    for (i = 0 ; i < nbytes ; i++) {
+        crc ^= bytes[i];
+
+        for (j = 0 ; j < 8 ; j++) {
+            if (crc & 1) {
+                crc = (crc >> 1) ^ 0x8C;
+            } else {
+                crc = crc >> 1;
+            }
+        }
+    }
+
+    return ~crc;
+}
+
+uint16_t crc16(const void *ptr, size_t nbytes, uint16_t in)
+{
+    const uint8_t *bytes;
+    uint16_t crc;
+    size_t i;
+    size_t j;
+
+    //log_assert(ptr != NULL);
+
+    bytes = ptr;
+    crc = ~in;
+
+    for (i = 0 ; i < nbytes ; i++) {
+        crc ^= bytes[i];
+
+        for (j = 0 ; j < 8 ; j++) {
+            if (crc & 1) {
+                crc = (crc >> 1) ^ 0x8408;
+            } else {
+                crc = crc >> 1;
+            }
+        }
+    }
+
+    return ~crc;
+}
+
+uint32_t crc32(const void *ptr, size_t nbytes, uint32_t in)
+{
+    const uint8_t *bytes;
+    uint32_t crc;
+    size_t i;
+    size_t j;
+
+    //log_assert(ptr != NULL);
+
+    bytes = ptr;
+    crc = ~in;
+
+    for (i = 0 ; i < nbytes  ; i++) {
+        crc ^= bytes[i];
+
+        for (j = 0 ; j < 8 ; j++) {
+            if (crc & 1) {
+                crc = (crc >> 1) ^ 0xEDB88320;
+            } else {
+                crc = (crc >> 1);
+            }
+        }
+    }
+
+    return ~crc;
+}