/* Arithmetic */
SCValue* Fraction_add(SCFraction* self, SCValue* other) {
SCValue* ret;
switch (other->type) {
case kValueFraction:
{
SCNumber numerator = self->numerator * other->fraction->denominator + self->denominator * other->fraction->numerator;
SCNumber denominator = self->denominator * other->fraction->denominator;
ret = ValFrac(Fraction_new(numerator, denominator));
break;
}
case kValueInteger:
{
SCNumber numerator = self->numerator + other->integer * self->denominator;
SCNumber denominator = self->denominator;
ret = ValFrac(Fraction_new(numerator, denominator));
break;
}
case kValueReal:
{
ret = ValReal(Fraction_asReal(self) + other->real);
break;
}
default:
return ValErr(nonArithType(other->type));
break;
}
return ret;
}
static Value* eval_abs(const Context* ctx, const ArgList* arglist, bool internal) {
if(arglist->count != 1) {
return ValErr(builtinArgs("abs", 1, arglist->count));
}
Value* val = Value_coerce(arglist->args[0], ctx);
if(val->type == VAL_ERR) {
return val;
}
Value* ret;
switch(val->type) {
case VAL_INT:
ret = ValInt(ABS(val->ival));
break;
case VAL_REAL:
ret = ValReal(ABS(val->rval));
break;
case VAL_FRAC:
ret = ValFrac(Fraction_new(ABS(val->frac->n), val->frac->d));
break;
case VAL_VEC:
ret = Vector_magnitude(val->vec, ctx);
break;
default:
badValType(val->type);
}
Value_free(val);
return ret;
}
/* Copying */
SCFraction* Fraction_copy(SCFraction* self) {
return Fraction_new(self->numerator, self->denominator);
}