How to round of the value?

Question

Possible Duplicate:
Objective-c: How to round off Float values?

I wanted to roundoff the float value from 42.56789 to 42.6. Can any one help me out in this.

Thanks in advance

score 0 · Answer 1 · answered May 06 '11 at 05:27

0

There are two functions in c namely floor and ceil to roundoff the float values.

answered May 06 '11 at 05:27

karthik

Note that directly using those functions will not produce the rounding expected by the OP. – May 06 '11 at 05:37
How comes you give an answer even though the asker is not user692270? Are you growing up? – Sebastian Mach Sep 27 '11 at 07:39

score 0 · Answer 2 · answered May 06 '11 at 05:39

0

float value=42.56789;
NSString *roundedValue=[NSString stringWithFormat:@"%0.f",value];
NSLog(@"%@",roundedValue);

It prints 43 on console.

answered May 06 '11 at 05:39

Gypsa

saadnib · Answer 3 · 2011-05-06T05:53:14.313

0

float f = 42.56789;

    f *= 10.0f;

    f = ceilf(f);

    f /= 10.0f;

    NSLog(@"%.02f",f);

edited May 06 '11 at 05:53

answered May 06 '11 at 05:40

saadnib

score 0 · Answer 4 · edited Jan 07 '12 at 09:45

0

I have done it manually .

float val=42.567890// float gives 6 decimal places
int x=(int) val;
float f=val-(int)val;
int o=(int) f*10;
float round=x+o/10+(f-(o/10))*1000)/50;

edited Jan 07 '12 at 09:45

thkala

answered May 06 '11 at 05:47

Samarth2011

you should not type cast a float value into int value because float has a higher rage then int. – saadnib May 06 '11 at 06:06

4 Answers4