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#ifndef _FANCY_CMP_H
#define _FANCY_CMP_H
struct cmp_info {
unsigned xcode;
int offset;
};
struct item {
unsigned value;
char *str;
};
static inline int fancy_cmp(const struct item *a, const struct item *b,
struct cmp_info *ctx)
{
unsigned vala = a->value ^ ctx->xcode;
unsigned valb = b->value ^ ctx->xcode;
const char *stra, *strb;
if (vala < valb)
return -1;
else if (valb < vala)
return 1;
stra = a->str + ctx->offset;
strb = b->str + ctx->offset;
return strcmp(stra, strb);
}
static inline int fancy_cmp_noctx(const void *av, const void *bv)
{
const struct item *a = (const struct item *)av;
const struct item *b = (const struct item *)bv;
struct cmp_info ctx_default = {
.xcode = 0x1234,
.offset = 3,
};
total_order(default_order, struct item, struct cmp_info *) = {
fancy_cmp, &ctx_default,
};
return default_order.cb(a, b, default_order.ctx);
}
#endif /* _FANCY_CMP_H */
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