exint 0.1.4

An implementation of generic signed and unsigned integers.
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Checks if the value is an ASCII alphabetic character:

- U+0041 'A' ..= U+005A 'Z', or
- U+0061 'a' ..= U+007A 'z'.

# Examples

Basic usage:

```
# use ::exint::primitive::*;
# ::exint::uint! {
let uppercase_a = u8::from(b'A');
let uppercase_g = u8::from(b'G');
let a = u8::from(b'a');
let g = u8::from(b'g');
let zero = u8::from(b'0');
let percent = u8::from(b'%');
let space = u8::from(b' ');
let lf = u8::from(b'\n');
let esc = u8::from(b'\x1b');

assert!(uppercase_a.is_ascii_alphabetic());
assert!(uppercase_g.is_ascii_alphabetic());
assert!(a.is_ascii_alphabetic());
assert!(g.is_ascii_alphabetic());
assert!(!zero.is_ascii_alphabetic());
assert!(!percent.is_ascii_alphabetic());
assert!(!space.is_ascii_alphabetic());
assert!(!lf.is_ascii_alphabetic());
assert!(!esc.is_ascii_alphabetic());
# }
```