No, in this context (a qsort() comparison callback) I'm talking about using casts to access the values to compare. Here's how I would have written it, without

No, in this context (a qsort() comparison callback) I'm talking about using casts to access the values to compare. Here's how I would have written it, without memcpy(): static int cmp_double(const void *va, const void *vb) { const double a = *(const double *) va, b = *(const double *) vb; return a < b ? -1 : a > b; } I know you can't "jump types", but this doesn't, since qsort() is passing pointers to doubles and we're just getting them back. Edit: missed const:s in function body oops.