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Annotation of researchv9/jerq/src/lib/j/point.c, revision 1.1

1.1     ! root        1: #include <jerq.h>
        !             2: point(b, pt, f)
        !             3:        register Bitmap *b;
        !             4:        Point pt;
        !             5:        register f;
        !             6: {
        !             7:        register bit;
        !             8:        register Word *p=addr(b, pt);
        !             9:        if(ptinrect(pt, b->rect)==0)
        !            10:                return;
        !            11:        bit=1<<(WORDSIZE-1)-(pt.x&WORDMASK);
        !            12:        if (f == F_XOR)
        !            13:                *p ^= bit;
        !            14:        else
        !            15:                if (f == F_CLR)
        !            16:                        *p &= ~bit;
        !            17:                else
        !            18:                        *p |= bit;
        !            19: }

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