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* lessThan primitive for integer comparison.

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This commit is contained in:
Eelco Dolstra 2006-09-24 15:21:48 +00:00
parent 2ab4bc44c7
commit df8873e14a
2 changed files with 13 additions and 1 deletions
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9
src/libexpr/primops.cc
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@ -779,6 +779,14 @@ static Expr primAdd(EvalState & state, const ATermVector & args)
}
static Expr primLessThan(EvalState & state, const ATermVector & args)
{
int i1 = evalInt(state, args[0]);
int i2 = evalInt(state, args[1]);
return makeBool(i1 < i2);
}
void EvalState::addPrimOps()
{
addPrimOp("builtins", 0, primBuiltins);
@ -810,6 +818,7 @@ void EvalState::addPrimOps()
addPrimOp("removeAttrs", 2, primRemoveAttrs);
addPrimOp("relativise", 2, primRelativise);
addPrimOp("__add", 2, primAdd);
addPrimOp("__lessThan", 2, primLessThan);
}