Module digit

Utilities to process digits.

This both contains routines to convert to and from digits, as well as iterate over digits while skipping digit separators.

Functions

• char_is_digit
  Determine if a character is a digit.
• char_is_digit_const
  Determine if a character is a digit with a radix known at compile time.
• char_to_digit
  Convert a character to a digit.
• char_to_digit_const
  Convert a character to a digit with a radix known at compile time.
• char_to_valid_digit_const
  Unchecked, highly optimized algorithm to convert a char to a digit. This only works if the input character is known to be a valid digit.
• digit_to_char
  Convert a digit to a character. This uses a pre-computed table to avoid branching.
• digit_to_char_const
  Convert a digit to a character with a radix known at compile time.