public SequenceScalar(RInt a, RDouble b, int[] dimensions, Names names, Attributes attributes, int n, int depth, ValueArithmetic arit, ASTNode ast) {
super(a, b, dimensions, names, attributes, n, depth, arit, ast);
bdbl = b.getDouble(0);
arithIsNA = RDouble.RDoubleUtils.arithIsNA(bdbl);
RIntSequence as = RIntSequence.cast(a);
afrom = as.from();
astep = as.step();
}