README

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
  • GitHub
• Daniel Lemire's blog - Computing the number of digits of an integer even faster
  • GitHub

📌 Implementation

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.

📌 Final note

More information about digit counting algorithms can be found in the sources, links above. Also, some usage examples are in the demo files.