MR_LdSpanArrayGet
extern u_int16_t MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span,
arRef = MR_LdSpanArrayGet(ld, 0, map);
arRef = MR_LdSpanArrayGet(ld, span, map);
arRef = MR_LdSpanArrayGet(ld, span, map);
static u_int16_t MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span,