bsearch
void bspline::bsearch(int n, const double *x, double x0, int *i)
bsearch(const void *key, const void *base0, size_t nmemb, size_t size,
bsearch(const void *key, const void *base0, size_t nmemb, size_t size,
void bsearch() {}
void bsearch() {}