Concurrent Funge-98 Compiler - A compiler (written in C) for Concurrent Funge-98

Usage: cf98c [source]

[source]: A file containing a program written in Concurrent Funge-98

• 0-9 Push this number on the stack
• a-f Push the integer value 10-15, respectively, on the stack
• • Addition: Pop a and b, then push a+b
• • Subtraction: Pop a and b, then push b-a
• • Multiplication: Pop a and b, then push a*b
• / Integer division: Pop a and b, then push b/a, rounded down. If a is zero, ask the user what result they want.
• % Modulo: Pop a and b, then push the remainder of the integer division of b/a. If a is zero, ask the user what result they want.
• ! Logical NOT: Pop a value. If the value is zero, push 1; otherwise, push zero.
• ` Greater than: Pop a and b, then push 1 if b>a, otherwise zero.

• Start moving right

• < Start moving left
• ^ Start moving up
• v Start moving down
• ? Start moving in a random cardinal direction
• _ Pop a value; move right if value=0, left otherwise
• | Pop a value; move down if value=0, up otherwise
• " Start string mode: push each character's ASCII value all the way up to the next "
• : Duplicate value on top of the stack
• \ Swap two values on top of the stack
• $ Pop value from the stack and discard it
• . Pop value and output as an integer
• , Pop value and output as ASCII character

• Trampoline: Skip next cell

• k Pop a value n; perform the next instruction n times
• p A "put" call (a way to store a value for later use). Pop y, x and v, then change the character at the position (x,y) in the program to the character with ASCII value v
• g A "get" call (a way to retrieve data in storage). Pop y and x, then push ASCII value of the character at that position in the program
• & Ask user for a number and push it
• ~ Ask user for a character and push its ASCII value
• @ End program

Befunge: http://en.wikipedia.org/wiki/Befunge

Funge-98 final specification http://quadium.net/funge/spec98.html