Re[3]: [Dev-C++] using char* as bitfield

[<ca...@kr...>]

hi Per,

Monday, September 29, 2003, 5:04:14 PM, you wrote:
> Yes, it is possible to do with char*

> char* alloc_bits(unsigned bits) {
>     char *bits;
>     unsigned size;
>     size = (bits+7)/8;
>     bits = malloc(size);
>     if (bits) memset(bits,0,size);
>     return bits;
> }

> void set_bit(char* bits,unsigned bit) {
>     array[bit/8] |= 1 << (bit&3);
> }

> char *mybits;

> mybits = alloc_bits(1000);
> if (mybits) set_bit(mybits,117);

> /Per W

wow, thanks!

 
gruss
/Christian                   mailto:ca...@kr...

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I propose that the following character sequence for joke markers:

:-)

                             19-Sep-82 11:44    Scott E  Fahlman