Floating Point Help?

[khooldude]

I was wondering if there is a way in C to determine the lenght of a floating point value?

EX:

float x=1.234;

I am wondering if there is a function where i plug in x and it will return the length to be 4?

[Banfa]

The "length" as you are defining it will always be 7 because that is how much precision a float has.

You may thing you have 1.234 but actually you have 1.233999 or 1.234001 or 1.234000.

Whatever it is you are trying to solve you need to think in different terms.

[gpraghuram]

Hi,
There is no function to find the length of the float value.
You can do it this way

char arr[100];
int fval=1.234
sprintf(arr,"%f",fval);
return (strlen(arr)-1);

Thanks
Raghuram

[Ganon11]

Hi,
There is no function to find the length of the float value.
You can do it this way

char arr[100];
int fval=1.234
sprintf(arr,"%f",fval);
return (strlen(arr)-1);

Thanks
Raghuram

Of course, since you are using a decimal number, it will have to be a float rather than an int :)

[bss]

Of course, since you are using a decimal number, it will have to be a float rather than an int :)

can't we use sizeof() ?

[horace1]

As bss says sizeof(float) will give the number of bytes used to store a float.
In addition the header file <float.h> gives the radix, precision, minumum, maximum, epsilon, etc. of floating point types, see
http://www.cplusplus.c om/reference/clibrary/cfloat/
this is useful to determine if a given implementation has sufficent precision for an application., etc