/** flo_cmp */
@JRubyMethod(name = "<=>", required = 1)
public IRubyObject op_cmp(ThreadContext context, IRubyObject other) {
switch (other.getMetaClass().getClassIndex()) {
case FIXNUM:
case BIGNUM:
if (Double.isInfinite(value)) {
return value > 0.0 ? RubyFixnum.one(getRuntime()) : RubyFixnum.minus_one(getRuntime());
}
case FLOAT:
double b = ((RubyNumeric) other).getDoubleValue();
return dbl_cmp(getRuntime(), value, b);
default:
if (Double.isInfinite(value) && other.respondsTo("infinite?")) {
IRubyObject infinite = other.callMethod(context, "infinite?");
if (infinite.isNil()) {
return value > 0.0 ? RubyFixnum.one(getRuntime()) : RubyFixnum.minus_one(getRuntime());
} else {
int sign = RubyFixnum.fix2int(infinite);
if (sign > 0) {
if (value > 0.0) {
return RubyFixnum.zero(getRuntime());
} else {
return RubyFixnum.minus_one(getRuntime());
}
} else {
if (value < 0.0) {
return RubyFixnum.zero(getRuntime());
} else {
return RubyFixnum.one(getRuntime());
}
}
}
}
return coerceCmp(context, "<=>", other);
}
}
/** rb_dbl_cmp (numeric.c) */
public static IRubyObject dbl_cmp(Ruby runtime, double a, double b) {
if (Double.isNaN(a) || Double.isNaN(b)) return runtime.getNil();
return a == b
? RubyFixnum.zero(runtime)
: a > b ? RubyFixnum.one(runtime) : RubyFixnum.minus_one(runtime);
}
