C++ (Cpp) INT642NUM示例

示例#1

文件： native.c 项目： gjmurakami-10gen/mongo-meta-driver

/**
 * Convert the provided raw bytes into a 64bit Ruby integer.
 *
 * @example Convert the bytes to an Integer.
 *    rb_integer_from_bson_int64(Int64, bytes);
 *
 * @param [ BSON::Int64 ] self The Int64 eigenclass.
 * @param [ String ] bytes The raw bytes.
 *
 * @return [ Integer ] The Ruby integer.
 *
 * @since 2.0.0
 */
static VALUE rb_integer_from_bson_int64(VALUE self, VALUE bson)
{
  const uint8_t *v = (const uint8_t*) RSTRING_PTR(bson);
  const int64_t lower = v[0] + (v[1] << 8) + (v[2] << 16) + (v[3] << 24);
  const int64_t upper = v[4] + (v[5] << 8) + (v[6] << 16) + (v[7] << 24);
  const uint64_t integer = lower + (upper << 32);
  return INT642NUM(integer);
}

示例#2

文件： native.c 项目： trmmy/bson-ruby

/**
 * Convert the provided raw bytes into a 64bit Ruby integer.
 *
 * @example Convert the bytes to an Integer.
 *    rb_integer_from_bson_int64(Int64, bytes);
 *
 * @param [ BSON::Int64 ] self The Int64 eigenclass.
 * @param [ String ] bytes The raw bytes.
 *
 * @return [ Integer ] The Ruby integer.
 *
 * @since 2.0.0
 */
static VALUE rb_integer_from_bson_int64(VALUE self, VALUE bson)
{
  return INT642NUM(rb_bson_to_int64_t(bson));
}