Home.... | log in.... | Pub my question! | Sign-up....
Java-index >> Java Essentials >> New To Java

Double or floating point?

Can someone explain specifically what the difference between a double and a floating point number?Much appreciated, Thanks,Fankle
[157 byte] By [fanklea] at [2007-10-3 2:48:55]
«« Having trouble with C:CHOOSE WHEN clauses
»» Counting A Byte As An Int?
# 1

http://www.cafeaulait.org/course/week2/02.html

float

4 bytes, IEEE 754. Covers a range from 1.40129846432481707e-45 to 3.40282346638528860e+38 (positive or negative).

Like all numeric types floats may be cast into other numeric types (byte, short, long, int, double). When lossy casts to integer types are done (e.g. float to short) the fractional part is truncated and the conversion is done modulo the length of the smaller type.

double

8 bytes IEEE 754. Covers a range from 4.94065645841246544e-324d to 1.79769313486231570e+308d (positive or negative).

TuringPesta at 2007-7-14 20:37:41 > top of Java-index,Java Essentials,New To Java...
# 2
A double can hold 15-16 significant decimal digits. A float can hold about 7.
ejpa at 2007-7-14 20:37:41 > top of Java-index,Java Essentials,New To Java...
# 3
double and float are both floating point numbers. One has more precision than the other.
paulcwa at 2007-7-14 20:37:41 > top of Java-index,Java Essentials,New To Java...
Java Essentials
New To Java

Java Essentials New Topic

Java Essentials Hot Topic

Java Essentials

All Classified