Then you need to read IEEE 754 (and accompanying documents...):
http://grouper.ieee.org/groups/754/
Boris
Peter Jay Salzman wrote:
On Fri 26 Jan 07, 9:04 AM, Boris Jeremic <[EMAIL PROTECTED]> said:
on my machine (fedora core 5) there are definitions in
./usr/lib/gcc-lib/i386-redhat-linux/3.2.3/include/float.h
/* Difference between 1.0 and the minimum double greater than 1.0 */
#undef DBL_EPSILON
#define DBL_EPSILON 2.2204460492503131e-16
but not in
./usr/lib/gcc/i386-redhat-linux/4.1.0/include/float.h
where it appears as:
/* The difference between 1 and the least value greater than 1 that is
representable in the given floating point type, b**1-p. */
#undef FLT_EPSILON
#undef DBL_EPSILON
#undef LDBL_EPSILON
#define FLT_EPSILON __FLT_EPSILON__
#define DBL_EPSILON __DBL_EPSILON__
#define LDBL_EPSILON __LDBL_EPSILON__
It's in neither place for me.
You can also calculate them yourself:
Yeah, I'm aware of that, but this is not what I wanted.
It's not DBL_EPSILON that I care about (I simplified my question). I wanted
a file that I could look at and know any of the constants that are of
interest to me. It's not one constant I wanted to know, but all of them, in
one place.
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