Iag
From Esolang
iag is an esoteric programming language with only three commands. It was invented by Panu Kalliokoski.
Contents |
[edit] Memory
iag supplies an unbounded number of memory cells initialized to zero. Each cell holds a 32-bit signed integer. There is also an accelerator register, which holds a 32-bit signed integer as well.
[edit] Commands
< Move memory pointer to the left
= Subtract contents of this memory cell from accelerator,
storing the result in both this memory cell and the accelerator,
then move memory pointer to the right
| If accelerator is
5, quit
4, call time() and save the result in active memory cell
3, read a character from stdin to active memory cell (EOF = 0)
2, print a character to stdout from active memory cell
1, do nothing
0, jump past the next | and set accelerator to 1
-n, return to the instruction after the | you were at n jumps ago
Panu's interpreter also offers the following, presumably not part of the language proper:
d Dump memory cells for debugging s Dump stack x End the program
[edit] Examples
|| === =<=< <<<=== =<=< <= ==== |<|<|<|<|<|<|<| ds
Reads eight characters of input, storing them in reverse order in the first eight memory cells.
= || ==<<==== =<=< <= =<=< <<<<<=<==== | <= <<= <<== <<= <<== <<= |
Prints all characters 0 to 256 (starting with 1) endlessly.
