bf: added notes regarding '{' and '<'.

2026-03-17 21:28:50 +00:00
parent 071fe2ff98
commit 4ba7d3c554
1 changed files with 4 additions and 0 deletions
--- a/src/bf.c
+++ b/src/bf.c
@@ -105,6 +105,8 @@ void program_execute(struct ProgramConcat *prg)
    switch (opcode)
    {
    case '<':
+      // NOTE: We're doing a safe subtraction here, but maybe we should
+      // terminate execution if subtraction will overflow?
      ctx.head0 = SAFE_SUB(ctx.head0, 1);
      ++ctx.ip;
      break;
@@ -113,6 +115,8 @@ void program_execute(struct ProgramConcat *prg)
      ++ctx.ip;
      break;
    case '{':
+      // NOTE: We're doing a safe subtraction here, but maybe we should
+      // terminate execution if subtraction will overflow?
      ctx.head1 = SAFE_SUB(ctx.head1, 1);
      ++ctx.ip;
      break;