4 Numbers
This section contains editorial rules on how to write down numeric values:
4.1 Use a point as decimal separator (ASM-51)
-
The decimal separator in numeric values is a point
.
to mark the boundary in a number between the integral and fractional parts of a decimal number. -
Do not use a point
.
as a delimiter for a thousand.
Exceptions
There are no exceptions.
Example
No | Yes |
---|---|
2.543,24 |
2543.24 |
1.000 |
1000 |
ISO/IEC Directives, Part 2, Principles and rules for the structure and drafting of ISO and IEC documents, 9th edition, 2021, 9.1 Representation of numbers and numerical values defines the comma as decimal separator. In ASAM standards the point is used as decimal separator because a point is the decimal separator in programming languages and the most English speaking countries.
Source
ASAM specific rule.
4.2 Use a leading zero for values between -1 and 1 (ASM-52)
-
A zero precedes the decimal separator in numeric values between -1 and 1.
Exceptions
There are no exceptions.
Example
No | Yes |
---|---|
.5 |
0.5 |
-.7 |
-0.7 |
Source
ASAM specific rule.
4.3 Use a following zero for floating-point numbers (ASM-127)
Exceptions
There are no exceptions.
Example
No | Yes |
---|---|
1 |
1.0 |
-5 |
-5.0 |
Source
ASAM specific rule.
4.4 Use of +, - and ± for numbers (ASM-130)
A + or - sign before a number (or quantity), used to indicate same sign or change of sign, is a monadic operator and shall not be separated from the number by a space character.
Exceptions
There are no exceptions.
Example
No | Yes |
---|---|
A Celsius temperature from - 7 °C to + 5 °C |
A Celsius temperature from -7 °C to +5 °C |
Tolerance +- 5 cm on the length of the square |
Tolerance ±5 cm on the length of the square |
Source
ISO/IEC Directives, Part 2 Principles and rules for the structure and drafting of ISO and IEC document; 2021.