double value example - Brave Search

different values for float and double

stackoverflow.com › questions › 11581337 › different-values-for-float-and-double

A float is a 32 bit IEEE 754 floating point.

A double is a 64 bit IEEE 754 floating point.

so it is just a matter of precision because neither of the fraction portions .8 and .65 have a terminating binary representation, so there is some rounding error. the double has more precision so it has slightly less rounding error.

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

Answer from Ross Larson on Stack Overflow

geeksforgeeks.org › java › double-doublevalue-method-in-java-with-examples

Double doubleValue() method in Java with examples - GeeksforGeeks

July 11, 2025 - // Java code to demonstrate // Double doubleValue() method class GFG { public static void main(String[] args) { // Double value Double a = 17.47; // wrapping the Double value // in the wrapper class Double Double b = new Double(a); // doubleValue ...

stackoverflow.com › questions › 11581337 › different-values-for-float-and-double

java - different values for float and double - Stack Overflow

A float is a 32 bit IEEE 754 floating point.

A double is a 64 bit IEEE 754 floating point.

so it is just a matter of precision because neither of the fraction portions .8 and .65 have a terminating binary representation, so there is some rounding error. the double has more precision so it has slightly less rounding error.

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

Can you explain what makes this difference between float and double?

Sure. Imagine you had two decimal types, one with five significant digits, and one with ten.

What value would you use to represent pi for each of those types? In both cases you'd be trying to get as close to a number which you couldn't represent exactly - but you wouldn't end up with the same value, would you?

It's the same for float and double - both are binary floating point types, but double has more precision than float.

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September 24, 2023

different values for float and double

stackoverflow.com › questions › 11581337 › different-values-for-float-and-double

A float is a 32 bit IEEE 754 floating point.

A double is a 64 bit IEEE 754 floating point.

so it is just a matter of precision because neither of the fraction portions .8 and .65 have a terminating binary representation, so there is some rounding error. the double has more precision so it has slightly less rounding error.

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

Answer from Ross Larson on Stack Overflow

docs.oracle.com › javase › 8 › docs › api › java › lang › Double.html

Double (Java Platform SE 8 )

October 20, 2025 - Constructs a newly allocated Double object that represents the floating-point value of type double represented by the string. The string is converted to a double value as if by the valueOf method. ... NumberFormatException - if the string does not contain a parsable number. ... Returns a string representation of the double argument.

en.wikipedia.org › wiki › Double-precision_floating-point_format

Double-precision floating-point format - Wikipedia

January 9, 2026 - Given the hexadecimal representation 3FD5 5555 5555 555516, Sign = 0 Exponent = 3FD16 = 1021 Exponent Bias = 1023 (constant value; see above) Fraction = 5 5555 5555 555516 Value = 2(Exponent − Exponent Bias) × 1.Fraction – Note that Fraction ...

IEEE 754 double-precision binary floating-point format: binary64 Implementations Notes and references

codefinity.com › blog › Float-vs-Double

Float vs Double

Q: How do Float and Double handle very large or very small numbers? A: Both types manage large and small numbers using scientific notation. However, double has a significantly larger range and precision, making it capable of handling much larger or smaller values compared to float.

Microsoft Learn

learn.microsoft.com › en-us › office › vba › language › reference › user-interface-help › double-data-type

Double data type | Microsoft Learn

September 13, 2021 - 4.94065645841247E-324 to 1.79769313486232E308 for positive values · The type-declaration character for Double is the number (#) sign.

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tutorialspoint.com › java › lang › pdf › number_doublevalue.pdf pdf

java.lang.number.doublevalue method

This method returns the numeric value represented by this object after conversion to type double. Exception · NA · Example · The following example shows the usage of lang.Number.doubleValue method. package com.tutorialspoint; public class NumberDemo { public static void main(String[] args) { // get a number as integer ·

theserverside.com › blog › Coffee-Talk-Java-News-Stories-and-Opinions › Format-double-Java-printf-example

How to format a Java double with printf example

To use Java printf to format double and float values with decimal place precision, follow these two rules: Use %f as the double specifier in the text string. Precede the letter f with a decimal and number to specify precision. Here is a simple example of both a float and double being formatted with Java’s printf function:

developer.arm.com › documentation › 107976 › 20-1-0 › Floating-point-code › Floating-point-data-types › Example-double-precision-floating-point-values-for-IEEE-754-arithmetic

Example double-precision floating-point values for IEEE ...

Find technical documentation for Arm IP and software, including architecture reference manuals, configuration and integration manuals, and knowledge articles.

datacamp.com › doc › java › double

double Keyword in Java: Usage & Examples

This example shows the use of a double array. The array temperatures is initialized with four double values.

tutorialspoint.com › home › java/lang › java double value method

Java Double Value Method

September 1, 2008 - This method returns the double value after conversion. The following example shows the usage of Java Number doubleValue() method. Here, we are instantiating an Integer object and initializing it. The method is then invoked on this object.

geeksforgeeks.org › java › java-number-doublevalue-method

Java Number.doubleValue() Method - GeeksforGeeks

May 15, 2025 - The double data type can hold fractional values, so, it is useful for converting integer-based values when working with mixed-type arithmetic expressions. Example 1: In this example, we are going to convert Integer and Float into double using Number.doubleValue() method.

geeksforgeeks.org › java › integer-doublevalue-method-in-java

Integer doubleValue() Method in Java - GeeksforGeeks

July 7, 2018 - // Code to illustrate doubleValue() ... a = new Integer(14); // Convert Integer number to double value double b = a.doubleValue(); System.out.println(b); } }...

docs.oracle.com › en › java › javase › 11 › docs › api › jdk.jdi › com › sun › jdi › DoubleValue.html

DoubleValue (Java SE 11 & JDK 11 )

January 20, 2026 - true if the Object is a DoubleValue and if applying "==" to the two mirrored primitives would evaluate to true; false otherwise. ... Returns the hash code value for this DoubleValue.

stackoverflow.com › questions › 8707555 › double-vs-doublevalue-in-java

Double vs doubleValue in Java - Stack Overflow

Prior to Java 1.5 auto-boxing (and unboxing) didn't exist in Java. So, you would need this to extract the underlying primitive from a Double.

If you are unfamiliar with auto-boxing, you can read more here. http://docs.oracle.com/javase/1.5.0/docs/guide/language/autoboxing.html

You call 'doubleValue' on a Double object to convert from the boxed Object to the primitive data type. Since most of the time the Double is auto-unboxed to a double, you usually don't need to do this, but if you want to be explicit in your conversion, you can call this method.

Microsoft Learn

learn.microsoft.com › en-us › dotnet › fundamentals › runtime-libraries › system-double

System.Double struct - .NET | Microsoft Learn

February 21, 2025 - Its least significant digit is thousandths, whereas the most significant digit in the product is 10-309. using System; public class Example14 { public static void Main() { Double value = 123456789012.34567; Double additional = Double.Epsilon ...

reddit.com › r/learnprogramming › float vs. double – what's the key difference?"

r/learnprogramming on Reddit: float vs. double – What's the Key Difference?"

November 2, 2024 -

New to programming and curious: what's the main difference between float and double? When should I use one over the other?

Thanks! 🙏😊

It can depend on the language spec, but usually the amount of memory and therefore the precision allowed by the type. Usually: A double will use 8 bytes or 64 bits of memory while a float uses only 4 bytes or 32 bits. This means that a float is less precise since it can store fewer digits after the decimal place. The way it works is that some bits of the datatype are used for the whole number portion of the number and some for the decimal portion. So as you can see, double, using more memory can have more bits allocated to the decimal portion making it more precise. See balefrost's reply to my comment for a correct explanation of this. Using float means using less memory, having more efficient code (due to lower precision so saving on calculations) and handling a smaller range of numbers (floats handle a smaller range than double due to reduced memory usage). Hope this helps!

The difference is memory size. Floats in Java (which I assume is the language you’re talking about) take up 32 bits of memory, the same as an integer. Doubles, as you might guess from the name, take up double the space: 64 bits. Doubles use those extra bits to both store a wider range of numbers and add more precision to the numbers they can store as well. There’s really seldom any reason to use floats in modern Java applications since memory is no longer a limiting factor for most programs. However, back in the day memory used to be much more limited so you would stick to regular floats as long as they were good enough for what you’re doing and only use doubles when absolutely necessary. This was starting to change even as Java was first created, but a lot of things in Java were designed to make the transition easier for programmers who were used to using C, a popular language at the time.

Apple Developer

developer.apple.com › documentation › appkit › nscell › doublevalue

doubleValue | Apple Developer Documentation

The cell’s value as a double-precision floating-point number.

University of Texas

cs.utexas.edu › ~mooney › ir-course › doc › ir › utilities › DoubleValue.html

A simple wrapper data structure for storing a double real value as an Object whose value can be reset.

Xojo Programming Forum

forum.xojo.com › general

If some values can't be represented as a Double, then what am I to use? - General - Xojo Programming Forum

May 19, 2021 - For example, consider this code: Var d1 As Double = 5.1 Var d2 As Double = d1 * 100 Var d3 As Double = Round(d1 * 100) The value 5.1 cannot be stored directly in a Double (it’s actually more like 5.0999999999999996).