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I am trying to create a 48-bit integer value. I understand it may be possible to use a char array or struct, but I want to be able to do bit masking/manipulation and I'm not sure how that can be do...
The implementation may define typedef names intN_t, int_fastN_t, int_leastN_t, uintN_t, uint_fastN_t, and uint_leastN_t when N is not 8, 16, 32 or 64. Typedef names of the form intN_t may only be defined if the implementation supports an integer type of that width with no padding. Thus, std::uint24_t denotes an unsigned integer type with a width of exactly 24 bits.
在这个示例中，我们定义了一个名为 uint48_t 的结构体，其中包含一个32位的无符号整数 low 和一个16位的无符号整数 high。 这些成员共同构成了一个48位的数据类型。
Wide-Integer implements a generic C++ template for uint128_t, uint256_t, uint512_t, uint1024_t, etc. - ckormanyos/wide-integer
My Current Sensor is the ADE7753 via SPI, and the IRMS register in full scale represents 1868467d,, I have used as work around data type as 32bits, but the Current Summation Delivered in the ZCL Report Attribute mesage,but according ZCL cluster specification I should set up the data type as 0x25 as 48-bit unsigned integer (Uint48).
If you often struggle to remember which uint has what max value in Solidity, as I do, this is a cheatsheet for you (and for me, I'll probably use it all the time). Gas is expensive on Ethereum so it's best to optimize for it and not to use variables that are larger than what we need. If all we are going to store in a variable are numbers from 1 to max 100, it doesn't make sense to use uint256 ...
uint40 and uint48 Unsigned Integer Types When storing file offsets in external memory, one often does not require full 64-bit indexes. Mostly, 40-bit or 48-bit are sufficient, if only < 1 TiB or < 16 TiB of data are processed. If one stores theses integers in five or six bytes, the total I/O volume can be reduced significantly.
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Int | UInt Types ClickHouse offers a number of fixed-length integers, with a sign (Int) or without a sign (unsigned UInt) ranging from one byte to 32 bytes. When creating tables, numeric parameters for integer numbers can be set (e.g. TINYINT(8), SMALLINT(16), INT(32), BIGINT(64)), but ClickHouse ignores them. Integer Ranges Integer types have the following ranges:
In addition, small integer types such as software-synthesized versions of uint24_t, uint48_t, uint64_t, uint96_t, uint128_t, etc. (or signed counterparts of these) can also be created with wide-integer.