Synge

A Shunting Yard calculation eNGinE with GTK+ and Command Line interfaces.

Features

• Multiple Precision Numbers (using MPFR + GMP)
  • Correct to 64 decimal places
  • No IEEE 754 rounding errors
• Scientific Functions
  • abs(...)
  • sqrt(...)
  • cbrt(...)
  • round(...)
  • ceil(...)
  • floor(...)
  • log(...)
  • ln(...)
  • log10(...)
  • rand(...)
  • randi(...)
  • fact(...)
  • series(...)
  • bool(...)
  • deg2rad(...)
  • deg2grad(...)
  • rad2deg(...)
  • rad2grad(...)
  • grad2deg(...)
  • grad2rad(...)
  • sinh(...)
  • cosh(...)
  • tanh(...)
  • asinh(...)
  • acosh(...)
  • atanh(...)
  • sin(...)
  • cos(...)
  • tan(...)
  • asin(...)
  • acos(...)
  • atan(...)
• Shortcut Conditional Expressions
  • true ? 42 : 1 (42)
  • false ? 1/0 : 3 (3, no error)
• Mathematical Constants
  • pi
  • e
  • phi
  • true
  • false
• Recursive User Functions
  • f := f + 1
• Variables
  • a = 42
• Simple Programming API
• Detailed Traceback Errors
• Dynamic Scoping

Examples

Fibonacci Sequence:

• a = b = 1 (set up variables)
• (a < b) ? (a = a + b) : (b = a + b) (generate next number in sequence)

Series:

• x = <input> (input)
• f := (x > 0) ? x-- + f : 0 (recursively generate result)

Factorial:

• x = <input> (input)
• f := (x > 0) ? x-- * f : 1 (recursively generate result)

Traceback:

• f := 1/0 (will not print an error)
• true ? f : 0

Synge Traceback (most recent call last):
  Module <main>
  <if> condition, at 6
  Function f, at 1
MathError: Cannot divide by zero @ 2

Dynamic Scoping:

• f := a=3
• ::a (delete a)
• f (define a within f)
• a

License

(GPLv3 or later)

Copyright (C) 2013, 2016 Aleksa Sarai

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.