C int, float, double

Posted by anon on Stack Overflow See other posts from Stack Overflow or by anon
Published on 2010-05-08T21:08:54Z Indexed on 2010/05/08 21:18 UTC
Read the original article Hit count: 205

Filed under:

int

|

double

|

float

|

c

There are certain int values that a float can not represent.

However, can a double represent all values a float can represent? (My intuition says yes, since double has more fractional bits & more exponent bits, but there might be some silly gotchas that I'm missing).

Thanks!

© Stack Overflow or respective owner

Related posts about int

The code works but when using printf it gives me a weird answer. Help please [closed]

as seen on Programmers - Search for 'Programmers'
//Programmer-William Chen //Seventh Period Computer Science II //Problem Statement - First get the elapsed times and the program will find the //split times for the user to see. // //Algorithm- First the programmer makes the prototype and calls them in the //main… >>> More
C# acting weird when reading in values from a file to an array

as seen on Stack Overflow - Search for 'Stack Overflow'
This is the structure of my file: 1111111111111111111111111 2222222222222222222222222 3333333333333333333333333 4444444444444444444444444 5555555555555555555555555 6666666666666666666666666 7777777777777777777777777 8888888888888888888888888 9999999999999999999999999 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 And… >>> More
Should I redesign my code when collegues says so?

as seen on Stack Overflow - Search for 'Stack Overflow'
I wrote a function recently that finds maximum of two ints. Here is a code: int get_max (int(*a)(int(*)(int(*)()),int(*)(int(*)(int**))), int(*b)(int(*) (int(*)()),int*,int(*)(int(*)()))){return (int)((((int(*)(int(*)(int(*)()),int( *)(int(*)())))a)> ((int(*)(int(*)(int(*)()),int(*)(int(*)())))b))… >>> More
what is the difference between const int*, const int * const, int const *

as seen on Stack Overflow - Search for 'Stack Overflow'
I always mess up how to use it correctly. Is there a set of rules defining what you can and cannot do? I want to know all the Do's and all DoNOTs in terms of assignments, passing to the functions, etc. Thanks >>> More
Problems Allocating Objects of Derived Class Where Base Class has Abstract Virtual Functions

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to get this Zombie/Human agent based simulation running, but I am having problems with these derived classes (Human and Zombie) who have parent class "Creature". I have 3 virtual functions declared in "Creature" and all three of these are re-declared AND DEFINED in both "Human" and "Zombie"… >>> More

Related posts about double

Using delegates in C# (Part 2)

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Part 1 of this post can be read here. We are now about to see the different syntaxes for invoking a delegate and some c# syntactic sugar which allows you to code faster. We have the following console application. 1: public delegate double Operation(double x, double y); 2: 3: public… >>> More
How to rotate a set of points on z = 0 plane in 3-D, preserving pairwise distances?

as seen on Game Development - Search for 'Game Development'
I have a set of points double n[] on the plane z = 0. And I have another set of points double[] m on the plane ax + by + cz + d = 0. Length of n is equal to length of m. Also, euclidean distance between n[i] and n[j] is equal to euclidean distance between m[i] and m[j]. I want to rotate n[] in 3-D… >>> More
dividing double by double gives weird results - Java

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am trying to do the following 33.33333333333333/100.0 to get 0.333333333333333 however when I run System.out.println(33.33333333333333/100.0); I get 0.33333333333333326 as the output, similarly when I run System.out.println(33.33333333333333/1000.0); I get 0.033333333333333326 as the output… >>> More
C# (4): double minus double giving precision problems

as seen on Stack Overflow - Search for 'Stack Overflow'
I have come across a precision issue with double in .NET I thought this only applied to floats but now I see that double is a float. double test = 278.97 - 90.46; Debug.WriteLine(test) //188.51000000000005 //correct answer is 188.51 What is the correct way to handle this? Round? Lop off the unneeded… >>> More
Is there a Math.atan2 substitute for j2ME? Blackberry development

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a wide variety of locations stored in my persistent object that contain latitudes and longitudes in double(43.7389, 7.42577) format. I need to be able to grab the user's latitude and longitude and select all items within, say 1 mile. Walking distance. I have done this in PHP so I snagged my… >>> More