Re: Single precision

[Peter Barada <pbarada at mail dot wm dot sps dot mot dot com>]

>A better solution is probably to #define double float immediately after
>including any header files.

If so, then cast all the floating point constants so the compiler will
use them as single precision constants instead of their default of
double precision which will then cause the float to get promoted to a
double and *then* operate on the constant.  Unless you case the
constants, the code will end up slower.  As an example:

#define double float
double float_abs(double a, double b)
{
  if (a >= (double)0.0)
    return a;
  else
    return -a;
}

If the zero wasn't case to double(which via the #define is really a
float, then the comparison will be done in dboule precision *after*
'a' is converted from single precision to double.

Hope this helps...

-- 
Peter Barada                                   Peter.Barada@motorola.com
Wizard                                         781-852-2768 (direct)
WaveMark Solutions(wholly owned by Motorola)   781-270-0193 (fax)