ref: e969575d2e55eec89d3a2765b974e023123d8fa5
dir: /sys/src/libmp/port/mptole.c/
#include "os.h" #include <mp.h> #include "dat.h" // convert an mpint into a little endian byte array (least significant byte first) // return number of bytes converted // if p == nil, allocate and result array int mptole(mpint *b, uchar *p, uint n, uchar **pp) { int m; m = (mpsignif(b)+7)/8; if(m == 0) m++; if(p == nil){ n = m; p = malloc(n); if(p == nil) sysfatal("mptole: %r"); setmalloctag(p, getcallerpc(&b)); } else if(n < m) return -1; if(pp != nil) *pp = p; mptolel(b, p, n); return m; }