ref: b9c1eab2e63e1c9b38d1c6a7a2170016e7f0a56c dir: /sys/src/ape/lib/ap/gen/ldiv.c/
#include <stdlib.h> ldiv_t ldiv(long int numer, long int denom) { ldiv_t ans; ans.quot=numer/denom; ans.rem=numer-ans.quot*denom; return ans; }