+void bcf_p1_init_prior(bcf_p1aux_t *ma, int type, double theta)
+{
+ init_prior(type, theta, ma->M, ma->phi);
+}
+
+void bcf_p1_init_subprior(bcf_p1aux_t *ma, int type, double theta)
+{
+ if (ma->n1 <= 0 || ma->n1 >= ma->M) return;
+ init_prior(type, theta, 2*ma->n1, ma->phi1);
+ init_prior(type, theta, 2*(ma->n - ma->n1), ma->phi2);
+}
+
+int bcf_p1_read_prior(bcf_p1aux_t *ma, const char *fn)
+{
+ gzFile fp;
+ kstring_t s;
+ kstream_t *ks;
+ long double sum;
+ int dret, k;
+ memset(&s, 0, sizeof(kstring_t));
+ fp = strcmp(fn, "-")? gzopen(fn, "r") : gzdopen(fileno(stdin), "r");
+ ks = ks_init(fp);
+ memset(ma->phi, 0, sizeof(double) * (ma->M + 1));
+ while (ks_getuntil(ks, '\n', &s, &dret) >= 0) {
+ if (strstr(s.s, "[afs] ") == s.s) {
+ char *p = s.s + 6;
+ for (k = 0; k <= ma->M; ++k) {
+ int x;
+ double y;
+ x = strtol(p, &p, 10);
+ if (x != k && (errno == EINVAL || errno == ERANGE)) return -1;
+ ++p;
+ y = strtod(p, &p);
+ if (y == 0. && (errno == EINVAL || errno == ERANGE)) return -1;
+ ma->phi[ma->M - k] += y;
+ }
+ }
+ }
+ ks_destroy(ks);
+ gzclose(fp);
+ free(s.s);
+ for (sum = 0., k = 0; k <= ma->M; ++k) sum += ma->phi[k];
+ fprintf(stderr, "[prior]");
+ for (k = 0; k <= ma->M; ++k) ma->phi[k] /= sum;
+ for (k = 0; k <= ma->M; ++k) fprintf(stderr, " %d:%.3lg", k, ma->phi[ma->M - k]);
+ fputc('\n', stderr);
+ for (sum = 0., k = 1; k <= ma->M; ++k) sum += k * ma->phi[ma->M - k];
+ fprintf(stderr, "[heterozygosity] %lf\n", (double)sum / ma->M);
+ return 0;
+}
+
+bcf_p1aux_t *bcf_p1_init(int n)