[PD] atoi should be atol (L)

[Hans-Christoph Steiner]

While I don't know the details of what is going on here, it sounds like  
you should file a bug in the bug tracker.

http://puredata.org/dev/bugtracker

.hc

On Dec 4, 2004, at 4:15 AM, Lex Ein wrote:

> This patch demonstrates loss of precision through [makefilename] and
> zexy's [atoi] when processing 32-bit hex numbers.
> So either atoi should really be atol (long int or long double), or all
> floats should be long double for maximum mantissa precision, or both.
> If I'm misunderstanding something, lemme know.
>
> These 32-bit numbers are for use as control, where bitfields are
> important;  such loss of precision can have dramatic undesirable
> effects.
>
> At first glance, Microsoft C and GNU both provide quite adequate double
> and long double mantissa size, so the existence of this data  
> degradation
> is odd.
>
> ----
> #N canvas 195 73 366 348 10;
> #X obj 16 166 >> 8;
> #X obj 16 124 >> 8;
> #X obj 16 207 >> 8;
> #X obj 22 144 & 255;
> #X obj 23 186 & 255;
> #X obj 23 228 & 255;
> #X obj 24 101 & 255;
> #X obj 16 80 int;
> #X text 204 17 32-bit value;
> #X floatatom 57 121 3 0 0 0 - - -;
> #X floatatom 56 165 3 0 0 0 - - -;
> #X floatatom 56 210 3 0 0 0 - - -;
> #X floatatom 57 247 3 0 0 0 - - -;
> #X floatatom 250 81 15 0 0 0 - - -;
> #X symbolatom 132 127 15 0 0 0 - - -;
> #X msg 43 16 0x03030302;
> #X msg 132 17 0x03030303;
> #X obj 132 53 atoi;
> #X obj 132 101 makefilename 0x%x;
> #X obj 186 163 atof;
> #X obj 186 189 atol;
> #X obj 250 213 >> 8;
> #X obj 250 171 >> 8;
> #X obj 250 254 >> 8;
> #X obj 256 191 & 255;
> #X obj 257 233 & 255;
> #X obj 257 275 & 255;
> #X obj 258 148 & 255;
> #X obj 250 127 int;
> #X floatatom 291 168 3 0 0 0 - - -;
> #X floatatom 290 212 3 0 0 0 - - -;
> #X floatatom 290 257 3 0 0 0 - - -;
> #X floatatom 291 294 3 0 0 0 - - -;
> #X connect 0 0 2 0;
> #X connect 0 0 4 0;
> #X connect 1 0 0 0;
> #X connect 1 0 3 0;
> #X connect 2 0 5 0;
> #X connect 3 0 10 0;
> #X connect 4 0 11 0;
> #X connect 5 0 12 0;
> #X connect 6 0 9 0;
> #X connect 7 0 6 0;
> #X connect 7 0 1 0;
> #X connect 13 0 28 0;
> #X connect 15 0 17 0;
> #X connect 16 0 17 0;
> #X connect 17 0 7 0;
> #X connect 17 0 13 0;
> #X connect 17 0 18 0;
> #X connect 18 0 14 0;
> #X connect 21 0 23 0;
> #X connect 21 0 25 0;
> #X connect 22 0 21 0;
> #X connect 22 0 24 0;
> #X connect 23 0 26 0;
> #X connect 24 0 30 0;
> #X connect 25 0 31 0;
> #X connect 26 0 32 0;
> #X connect 27 0 29 0;
> #X connect 28 0 27 0;
> #X connect 28 0 22 0;
>
> ----
>
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