Sha256: 425653d1080865686ea2ca3551b767532349b7ef20b403c6f3c52b6bca1b9e93
Contents?: true
Size: 590 Bytes
Versions: 6
Compression:
Stored size: 590 Bytes
Contents
#include "ruby.h"
#include "stdio.h"
static VALUE t_itu_t(VALUE self, VALUE string) {
VALUE str = StringValue(string);
int n = RSTRING(str)->len;
char* p = RSTRING(str)->ptr;
unsigned long r = 0xFFFFFFFF;
int i, j;
for (i = 0; i < n; i++) {
r = r ^ p[i];
for (j = 0; j < 8; j++) {
if ( (r & 1) != 0 ) {
r = (r >> 1) ^ 0xEDB88320;
} else {
r = r >> 1;
}
}
}
return INT2FIX(r ^ 0xFFFFFFFF);
}
VALUE cCRC32;
void Init_crc32() {
cCRC32 = rb_define_module("CRC32");
rb_define_module_function(cCRC32, "itu_t", t_itu_t, 1);
}
Version data entries
6 entries across 6 versions & 6 rubygems