Show HN: bcal – Storage & general-purpose CLI calculator for programmers

`bcal` (Byte CALculator) is a REPL CLI utility for storage expression evaluation, unit conversion and address calculation. If you can't calculate the hex address offset for (512 - 16) MiB, or the value when the 43rd bit of a 64-bit address is set mentally, `bcal` is for you.

It has a `bc` mode for general-purpose numerical calculations. Alternatively, it can also invoke `calc` which works better with expressions involving multiple bases.

The latest version 2.2 is released today.

### Features

  - REPL and single execution modes
  - evaluate arithmetic expressions involving storage units
  - perform general purpose calculations (using bc or calc)
  - works with piped input or file redirections
  - convert to IEC/SI standard data storage units
  - interactive mode with the last valid result stored for reuse
  - show the address in bytes
  - show address as LBA:OFFSET
  - convert CHS to LBA and vice versa
  - base conversion to binary, decimal and hex 
  - custom sector size, max heads/cylinder and max sectors/track
  - minimal dependencies