japl
/
JustAnotherJAPL
mirror of https://github.com/japl-lang/JustAnotherJAPL.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fixed bug in the optimizer when folding exponentiation with negative exponents

This commit is contained in:
Nocturn9x 2021-10-30 11:48:46 +02:00
parent a15aee3d23
commit df59bc8f0d
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/backend/optimizer.nim
View File

@ -178,7 +178,13 @@ proc optimizeBinary(self: Optimizer, node: BinaryExpr): ASTNode =
of FloorDiv:
z = int(x / y)
of DoubleAsterisk:
z = x ^ y
if y >= 0:
z = x ^ y
else:
# Nim's builtin pow operator can't handle
# negative exponents, so we use math's
# pow and convert from/to floats instead
z = pow(x.float, y.float).int
of Percentage:
z = x mod y
of Caret:
@ -195,6 +201,9 @@ proc optimizeBinary(self: Optimizer, node: BinaryExpr): ASTNode =
except OverflowDefect:
self.newWarning(valueOverflow, node)
return BinaryExpr(kind: binaryExpr, a: a, b: b, operator: node.operator)
except RangeDefect:
# TODO: What warning do we raise here?
return BinaryExpr(kind: binaryExpr, a: a, b: b, operator: node.operator)
result = IntExpr(kind: intExpr, literal: Token(kind: Integer, lexeme: $z, line: IntExpr(a).literal.line, pos: (start: -1, stop: -1)))
elif a.kind == floatExpr or b.kind == floatExpr:
var x, y, z: float