unsigned char *ret = snewn(outlen, unsigned char);
int i;
- debug(("hex2bin: in '%s'", in));
-
memset(ret, 0, outlen*sizeof(unsigned char));
for (i = 0; i < outlen*2; i++) {
int c = in[i];
}
}
+static void memswap(void *av, void *bv, int size)
+{
+ char tmpbuf[512];
+ char *a = av, *b = bv;
+
+ while (size > 0) {
+ int thislen = min(size, sizeof(tmpbuf));
+ memcpy(tmpbuf, a, thislen);
+ memcpy(a, b, thislen);
+ memcpy(b, tmpbuf, thislen);
+ a += thislen;
+ b += thislen;
+ size -= thislen;
+ }
+}
+
void shuffle(void *array, int nelts, int eltsize, random_state *rs)
{
- char *tmp = smalloc(eltsize);
char *carray = (char *)array;
int i;
for (i = nelts; i-- > 1 ;) {
int j = random_upto(rs, i+1);
- if (j != i) {
- memcpy(tmp, carray + eltsize * i, eltsize);
- memcpy(carray + eltsize * i, carray + eltsize * j, eltsize);
- memcpy(carray + eltsize * j, tmp, eltsize);
- }
+ if (j != i)
+ memswap(carray + eltsize * i, carray + eltsize * j, eltsize);
}
}
+void draw_rect_outline(frontend *fe, int x, int y, int w, int h, int colour)
+{
+ int x0 = x, x1 = x+w-1, y0 = y, y1 = y+h-1;
+
+ draw_line(fe, x0, y0, x0, y1, colour);
+ draw_line(fe, x0, y1, x1, y1, colour);
+ draw_line(fe, x1, y1, x1, y0, colour);
+ draw_line(fe, x1, y0, x0, y0, colour);
+}
+
/* vim: set shiftwidth=4 tabstop=8: */