Teco KDB - ISO

Các thuật ngữ trong ISO (7)

software measurement standard

reference data or reference software intended to reproduce the value of a measurand with known specification uncertainty in order to verify the software used to calculate the value of a measurand

ISO 25178-71:2017(en), 3.1

BYTE

1-byte (8-bit) representation of an ASCII character

ISO 25178-71:2017(en), 3.3

INT16

2-byte representation of a signed integer

Note 1 to entry: Short integers have a minimum value of −32 768 and a maximum value of 32 767.

Note 2 to entry: The less significant bytes are stored in lower memory addresses; the more significant bytes are stored in higher memory addresses.

ISO 25178-71:2017(en), 3.5

DOUBLE

8-byte representation of a real number consisting of a sign bit, an 11-bit binary exponent, and a 52-bit mantissa, plus the implied high-order 1 bit

Note 1 to entry: Normalized double precision floating point numbers have a range of ±[1 + (1 – 2⁻⁵²)] ∙ 2^1 023 ≈ ± 1,797 693 134 862 315 7 ∙ e³⁰⁸. The smallest value is 2,225 073 858 507 201 4 ∙ e⁻³⁰⁸.

Note 2 to entry: The less significant bytes are stored in lower memory addresses; the more significant bytes are stored in higher memory addresses.

Note 3 to entry: See IEEE 754-2008 for binary floating-point arithmetic.

ISO 25178-71:2017(en), 3.7

CHAR[n]

array of n ASCII characters

ISO 25178-71:2017(en), 3.2

UINT16

2-byte representation of an unsigned integer

Note 1 to entry: Unsigned integers have a minimum value of 0 and a maximum value of 65 535.

Note 2 to entry: The less significant bytes are stored in lower memory addresses; the more significant bytes are stored in higher memory addresses.

ISO 25178-71:2017(en), 3.4

INT32

4-byte representation of a signed integer

Note 1 to entry: Long integers have a minimum value of −2 147 483 648 and a maximum value of 2 147 483 647.

Note 2 to entry: The less significant bytes are stored in lower memory addresses; the more significant bytes are stored in higher memory addresses.

ISO 25178-71:2017(en), 3.6

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