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BinOps

Simple binary operation calculator, supports logN, sin, cos, tan, hexadecimal numbers

~/Projects/BinOps% ./dist/build/BinOps/BinOps
Sigma :: + - * / ** mod unm logN sin cos tan 0xFF_FF 2.1 :q
Σ input your favorite math expression here (Thanks to IEEE1394 and Readline)

input :q :quit, press q key or Ctrl - D to leave

Building

$ cabal build
[DuangSUSE@duangsuse]~/Projects/BinOps% cabal build
Preprocessing executable 'BinOps' for BinOps-0.1.0.0..
Building executable 'BinOps' for BinOps-0.1.0.0..

$ cabal run
[DuangSUSE@duangsuse]~/Projects/BinOps% cabal run
Preprocessing executable 'BinOps' for BinOps-0.1.0.0..
Building executable 'BinOps' for BinOps-0.1.0.0..
Running BinOps...

Examples

Σ 1+2+3
 = Just ((1.0 + 2.0) + 3.0)
 = 6.0
Σ 2**2 ** 3
 = Just (2.0 ** (2.0 ** 3.0))
 = 256.0
Σ unm 2 + 43 ** 4 + 2
 = Just ((-2.0 + (43.0 ** 4.0)) + 2.0)
 = 3418801.0
Σ 0xFF
 = Just 255.0
 = 255.0
Σ 0.5 * 10 * 100
 = Just ((0.5 * 10.0) * 100.0)
 = 500.0
Σ log2 10
 = Just log2 10.0
 = 3.0
Σ 10 mod 3
 = Just (10.0 mod 3.0)
 = 1.0
Σ 10 mod 3 mod 1
 = Just (10.0 mod (3.0 mod 1.0))
 = [E] Division by zero
Σ sin 0.3333
 = Just sin 0.3333
 = 0.32716319804950605
Σ ;) Bye

Operators and number syntax

Binary operator

Left associative chainl1 sorted by precedence, ascending

  • Add: +, Substract: -
  • Multiply: *, Divide: /

Right associative chainr1 sorted by precedence, ascending

  • Power, **
  • Modulo, mod

Unary operator

  • Negate, unm
  • logN: log2 log10 logN...
  • sin cos tan
  • Paren: (1) (1 + 2) * 3

Numbers

  • Hexadecimal, likely 0x1234 0xFF 0xFF_00
  • Decimal, Rational number, likely 0.1 0.5 1_0000.5

Whitespaces

  • Newline '\n', Carriage return '\r'
  • Space ' ', Tab '\t'

Document

This console application is self-documented

There is no command line arguments nor environment variables designed to change the behavior of this program

Bugs

Just a toy calculator, don't create issues whatever you found

BTW. PRs are welcome

BTW. Known: Parser cannot handle unary operators and negative number literatal very well

License

Unlicense (PublicDomain)