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From: | Elias Mårtenson |
Subject: | Re: [Bug-apl] chunk length specified across bytes |
Date: | Wed, 9 Sep 2015 12:26:18 +0800 |
The result of FIO∆fread FIO∆fopen_ro filenamewill return a vector of values, where each number is a byte. Many different file format specifications specify a size within the file that may be a head size, a chunk size, etc.Is the correct way to interpret a number that spans many bytes (in this case 0 0 32 0 and 0 0 0 4) to use10 ⊥ 0 0 32 0 and 10 ⊥0 0 0 4Hope that clears up my idea a little-Alex-------- Original Message --------
Subject: Re: [Bug-apl] chunk length specified across bytes
From: Elias_Mårtenson <address@hidden>
Date: Tue, September 08, 2015 8:44 pm
To: address@hidden
Cc: "address@hidden" <address@hidden>
I'm not entirely sure how this relates to GNU APL in any way?On 9 September 2015 at 11:41, <address@hidden> wrote:Hi Bug APL,The PNG spec says that the length of a "chunk" (their term, not mine) is specified in the first four bytes of the file. When I read it in, the first four values are :0 0 32 0and the length is almost certainly not 32.A smaller chunk that was 4 had its first four bytes as:0 0 0 4What is the weighting given to these values (if that even is the right question to ask)?-Alex
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