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Number-to-ByteVector-conversion #44

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affine merged 7 commits from Number-to-ByteVector-conversion into main 2025-12-04 12:09:45 -08:00
Conversation 2 Commits 7 Files changed 2 +19 -1
1 changed files with 19 additions and 1 deletions
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20
hyphae/src/vm.rs
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@ -399,6 +399,19 @@ impl VM {
}
}),
i::NTOBV => access!(&instr.1[0], {
if let Datum::Number(snum) = **access!(&instr.1[0]) {
let n = snum.make_inexact();
if !snum.is_exact() || n.0.fract() != 0.0 ||
n.0 > u8::MAX.into() || n.0 < 0.0 {
e!("input to NTOBV cannot cleanly convert");
}
Datum::ByteVector(n.0.to_bits().to_be_bytes().to_vec()).into()
} else {
e!("illegal argument to NTOBV instruction");
}
}),
i::NTOC => access!(&instr.1[0], {
if let Datum::Number(snum) = **access!(&instr.1[0]) {
let n = snum.make_inexact();
@ -1102,7 +1115,7 @@ mod tests {
Instruction(i::DUPL, vec![Operand(Address::Stack, 0),
Operand(Address::Expr, 0)]),
// create a strunct and push to stack
// create a struct and push to stack
Instruction(i::CTOS, vec![Operand(Address::Expr, 0)]),
Instruction(i::PUSH, vec![Operand(Address::Expr, 0)]),
@ -1123,9 +1136,14 @@ mod tests {
Instruction(i::NTOE, vec![Operand(Address::Expr, 0)]),
Instruction(i::PUSH, vec![Operand(Address::Expr, 0)]),
// convert to ByteVector and push to stack
Instruction(i::NTOBV, vec![Operand(Address::Expr, 0)]),
Instruction(i::PUSH, vec![Operand(Address::Expr, 0)]),
// create a char and push to stack
Instruction(i::NTOC, vec![Operand(Address::Expr, 0)]),
Instruction(i::PUSH, vec![Operand(Address::Expr, 0)]),
])).with_stack({
let mut i = StackStack::new();
i.push_current_stack(Datum::Char(b'a').into());