> Tags: upstream patch
Looks like this is intended for me?
What man page is this intended for?
> Included is a sample program that demonstrates how to sort IEEE
> floating point values, including NAN and friends, in a useful way;
> please consider including it.
>
> // make CFLAGS='-W -Wall -O3 -g -std=gnu99' LDFLAGS=-lm fpnansort
> #include <math.h>
> #include <stdlib.h>
> #include <stdio.h>
> #include <assert.h>
>
> int fpcomp(const void *a, const void *b)
> {
> double x=*(double *)a,
> y=*(double *)b;
>
> if (x<y) return -1;
> else if (x>y) return 1;
> // The not-normal values will be grouped together, but
> // otherwise unordered:
> else if (!isnormal(x)) return 1;
> else if (!isnormal(y)) return -1;
Why isnormal()?
> assert(x==y);
What is assert doing here?
> return 0;
> }
Cheers,
Michael
--
Michael Kerrisk
maintainer of Linux man pages Sections 2, 3, 4, 5, and 7
Want to help with man page maintenance?
Grab the latest tarball at
ftp://ftp.win.tue.nl/pub/linux-local/manpages/,
read the HOWTOHELP file and grep the source
files for 'FIXME'.
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