So, for the whole day, I've been rewriting many of

Question

So, for the whole day, I've been rewriting many of

the default standard lib funtions in a naive way, just for the sake of it.
And this is the code of despair. It's horrible, debugged with printfs, but it's the place where I got it :)
https://pastebin.com/LD0JMp64
Only for curious. I don't ask for help that much because I'm just going to rewrite it when my head is fresh, but just for curiosity, wtf?

0

02.01.2021

13 ответов

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swarnim

also put hard casts where ever you can.

0

02.01.2021

Naz Klymok Автор вопроса

swarnim
also put hard casts where ever you can.

do you mean casting (void *) to (unsigned char *)?

0

02.01.2021

Daniele°

what are you trying to do?

0

02.01.2021

Naz Klymok Автор вопроса

Daniele°
what are you trying to do?

a naive implementation of memmem, a function on string.h

0

02.01.2021

Naz Klymok Автор вопроса

Daniele°
what are you trying to do?

P.s. I figured it out , sent the code a few messages above

0

02.01.2021

Daniele°

Naz Klymok
a naive implementation of memmem, a function on st...

void* meme(const void* m, size_t msz, const void* s, size_t ssz){ const void* f = m; while( (f=memchr(f, *(char*)s, msz-(f-m)) ){ if( f-m < ssz ) return NULL; if( !memcmp(f,s,ssz) ) return f; ++f; } return NULL; }

0

02.01.2021

swarnim

Daniele°
void* meme(const void* m, size_t msz, const void* ...

Btw what happens when ssz == 1, And the first char is s then?

0

03.01.2021

Daniele°

swarnim
Btw what happens when ssz == 1, And the first char...

?

0

03.01.2021