[poppler] PDF to PPM: Page height differs between 32bit and 64bit systems

[Dyweni - Poppler]

On 2014-05-14 13:12, Albert Astals Cid wrote:
> El Dimecres, 14 de maig de 2014, a les 09:49:22, Dyweni - Poppler va 
> escriure:
>> Hi,
>> 
>> I've traced the problem back to line 501 in the same file 'pg_h = pg_h 
>> *
>> (y_resolution / 72.0);'
> 
> What's the value of y_resolution?
> 


150





> Cheers.
>   Albert
> 
>> 
>> On 32bit systems, before that line (using printf("%.64f", ...)), I 
>> get:
>> ----
>> pg_h =
>> 792.0000000000000000000000000000000000000000000000000000000000000000
>> ----
>> 
>> On 32bit systems, after that line, I get:
>> ----
>> pg_h =
>> 1650.0000000000000000000000000000000000000000000000000000000000000000
>> ----
>> 
>> 
>> On 64bit systems, before that line (using printf("%.64f", ...)), I 
>> get:
>> ----
>> pg_h =
>> 792.0000000000000000000000000000000000000000000000000000000000000000
>> ----
>> 
>> On 64bit systems, after that line, I get:
>> ----
>> pg_h =
>> 1650.0000000000002273736754432320594787597656250000000000000000000000
>> ----
>> 
>> 
>> Thanks,
>> Dyweni
>> 
>> On 2014-05-14 09:39, Dyweni - Poppler wrote:
>> > Hi,
>> >
>> > I noticed a discrepancy between the PPM files that pdftoppm creates on
>> > 32bit systems and what it creates on 64bit systems.
>> >
>> > On 32bit systems, the page height is listed as 1650.  On 64bit
>> > systems, the page height is listed as 1651.
>> >
>> > I think I've narrowed it down to the use of 'h = (int)ceil(pg_h)' on
>> > line 214 of utils/pdftoppm.cc (0.26.0).
>> >
>> > Here's my debugging method: I added the following debug lines right
>> > after that line:
>> > ----
>> > printf("pg_w = %f, w = %i\n", pg_w, w);
>> > printf("pg_h = %f, h = %i\n", pg_h, h);
>> > ----
>> >
>> >
>> > On 32bit systems, I get the following:
>> > ----
>> > pg_w = 1275.000000, w = 1275
>> > pg_h = 1650.000000, h = 1650
>> > ----
>> >
>> >
>> > On 64bit systems, I get the following:
>> > ----
>> > pg_w = 1275.000000, w = 1275
>> > pg_h = 1650.000000, h = 1651
>> > ----
>> >
>> >
>> > Any suggestions for a fix?
>> >
>> >
>> > Thanks,
>> > Dyweni
>> 
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> 
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