The module contains functions that return the number of digits for a number,
using various algorithms.
The code is based on following sources:
- CodeMaze - What’s the Best Way to Count the Digits in a Number
- Daniel Lemire's blog - Computing the number of digits of an integer even faster
All functions return the number of digits for a supported number,
otherwise null.
Supported number types and ranges:
- .ComptimeInt, .Int: ∓340282366920938463463374607431768211455
- min(i129) = -340282366920938463463374607431768211456 it is accepted to cover the type
- .ComptimeFloat, .Float:
- comptime_float: ∓10384593717069655257060992658440193
- f16: ∓2049
- f32: ∓16777217
- f64: ∓9007199254740993
- f80: ∓36893488147419103234
- f128: ∓10384593717069655257060992658440193
Note that for float numbers the type is important, for example:
- 2050 as f16: returns
null - 2050 as f32: returns 4, same as for any type greater than f16
Negative numbers are converted to their absolute value.
More information about digit counting algorithms can be found in the sources, links above. Also, some usage examples are in the demo files.