03-31-2002
C programming - Urgent help required
Hi,
I am writing a small 'C' program to add very large floating point numbers. Now the program should be capable of adding the maximum floating point number that is possible on Sun Solaris machine.
Can some let me know whether there is any extra logic that needs to applied for making sure that the program can handle addition of largest floating number that a machine allows.
Thanks,
Last edited by kkumar1975; 03-31-2002 at 01:38 PM..
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ftofix(3alleg4) Allegro manual ftofix(3alleg4)
NAME
ftofix - Converts a floating point value to fixed point. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
fixed ftofix(double x);
DESCRIPTION
Converts a floating point value to fixed point. Unlike itofix(), this function clamps values which could overflow the type conversion, set-
ting `errno' to ERANGE in the process if this happens. Example:
fixed number;
number = itofix(-40000);
ASSERT(fixfloor(number) == -32768);
number = itofix(64000);
ASSERT(fixfloor(number) == 32767);
ASSERT(!errno); /* This will fail. */
RETURN VALUE
Returns the value of the floating point value converted to fixed point clamping overflows (and setting `errno').
SEE ALSO
fixtof(3alleg4), itofix(3alleg4), fixtoi(3alleg4), exfixed(3alleg4), exrotscl(3alleg4), exspline(3alleg4), exupdate(3alleg4)
Allegro version 4.4.2 ftofix(3alleg4)