max precision in float

Applications Programming
1

Hi,

As all of us know that size of int is machine as well as compiler dependent
we can get the range and size of an int , float and char etc in

/usr/include/limits.h

header file of a compiler

but could any one tell me how to get info of precision of float and double
data type in a perticular compiler ?

thanks

2

This should do the trick... Enquire.c

3

Or look in limits.h yourself for FLT_DIG and DBL_DIG

On POSIX-compliant UNIX boxes POSIX requires those to be at least

FLT_DIG 6
DBL_DIG 15

4

but i did not get this in limits.h

5

(a) what platform / compiler are you using?

(b) did "enquire.c" work for you?

(c) it does not have to come from limits.h, however if limits.h is included you should have it.

6

linux , GNU C compiler

7

try #include <float.h>