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Big Issue with float, double, Java Floating Point.

3639778Mar 1 2018 — edited Mar 7 2018

I have found that double and float types in java are heirs to arithmetic underflow and overflow at any use.

I have found that presently, floating point is an arithmetic approximation.  My problem is that

the java language needs to be changed here, so that one may have arithmetic accuracy with

floats and doubles.

There is also a trigonometric shortfall when it comes to BigDecimal.

I have attempted to, and have more carefully described these problems, via the java bugs database:

JDK-8190947

JDK-8197995

JDK-8190991

JDK-8190946

-These types, as things are, must be computationally discarded, used only in terms of push and pull,

and be programmed around using BigDecimal, which will be a waste of memory,

program execution speed, and a total confusion due to the lack of any operator

usage options on BigDecimals.

-It is the case that set, get methods, constructors and mutability methods are all based

around float and double, not BigDecimal, which is part of the previous problem.

-It is the case that setting up BigDecimals can be and is a circumstantial waste of memory

with very many tasks, combined with the fact that the fact that having to use BigDecimal

method calls is nowhere near as efficient or legible to developers or mathematics and enginner

programmers (and useful with their time) as 

+, -, *, /, %, +=,-+,*=,/=,%=, ++, --

.This is a syntax argument largely, but also an instruction argument

since BigDecimals have to be set up or used with an extra, thereby second, call.

-It is the case that every other major language includes both floating point and accuracy mode

options with these two types and or Objects, either as a source code instruction or as a

compiler switch option.  These languages at least provide both options for floating

point and mathematical accuracy mode.

-It is so that the present arithmetic underflow and underflow are total disadvantages,

that need only be altered in place, for preconditions, postconditions and in place.

This is in regard to programs that have been compiled and built already.

-My Oracle Support technical reviews seem not to recognise these real problems in

technical analysis, or only interpret matters in terms of the

Java Language Specification on these issues, which of itself possesses inadequecies in these places.

Can someone please reply to me on these things? 

Can Oracle update the Java SE language?

Comments

unknown-7404

2781564 wrote:

Oracle CRM is blocked by Java 8 due to "medium" security being removed.  Possibly this is because the application requests all permissions.  Is there a reconfiguring that can be done to allow it to run/launch in Java "high" security mode.  The desktop administrators just upgraded all call center desktops to Java 8 (1.8_20) and Contact Center and other "Java forms" based application components are failing to launch.

We are working with the Admin/Security teams to see if our site can be added to the site Exceptions list but this is a lengthy process and hope we can configure CRM to work with the higher "Java" security requirement.

This is not really a Java 8 question. You need to post in a CRM forum or open an SR with Oracle support via your MOS account.

As you already noted Java 8 "medium" security was removed.

https://www.java.com/en/download/help/jcp_security.xml

Starting with Java 8 Update 20, the Medium security level has been removed from the Java Control Panel. Only High and Very High levels are available.

The exception site list provides users with the option of allowing the same applets that would have been allowed by selecting the Medium option but on a site-by-site basis therefore minimizing the risk of using more permissive settings.

Seems like someone in your org approved the Java update without properly testing ALL of the possible affected apps.

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Added on Mar 1 2018
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