### Various Constants

N_DAYS_IN_MONTHS <- c(
  Jan = 31L, Feb = 28L, Mar = 31L,
  Apr = 30L, May = 31L, Jun = 30L,
  Jul = 31L, Aug = 31L, Sep = 30L,
  Oct = 31L, Nov = 30L, Dec = 31L
)

## lower bound included, upper excluded
N_DAYS_BETWEEN_MONTHS_LOWER <- matrix(0L, 12, 12)
for (i in 1:12) {
  for (j in 1:12) {
    N_DAYS_BETWEEN_MONTHS_LOWER[[i, j]] <-
      if (i < j) {
        sum(N_DAYS_IN_MONTHS[i:(j - 1)])
      } else if (j < i) {
        sum(N_DAYS_IN_MONTHS[-(j:(i - 1))])
      } else {
        0L
      }
  }
}

## upper bound included, lower excluded
N_DAYS_BETWEEN_MONTHS_UPPER <- matrix(0L, 12, 12)
for (i in 1:12) {
  for (j in 1:12) {
    N_DAYS_BETWEEN_MONTHS_UPPER[[i, j]] <-
      if (i < j) {
        sum(N_DAYS_IN_MONTHS[(i + 1):j])
      } else if (j < i) {
        sum(N_DAYS_IN_MONTHS[-((j + 1):i)])
      } else {
        0L
      }
  }
}

lub2base_units <- list(second = "secs", minute = "mins", hour = "hours", day = "days")


### Used in guess.R

## dput(as.POSIXct(sprintf("1970-%02d-%02d %s:00:00", 1:12, c(1, 2, 3, 5), c("01", "22")), tz = "UTC"))
.date_template <- structure(c(
  3600, 2844000, 5274000, 8200800, 10371600, 13212000,
  15814800, 18741600, 20998800, 23752800, 26442000, 29282400
),
class = c("POSIXct", "POSIXt"), tzone = "UTC"
)

.primes <- c(
  1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,
  61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139,
  149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229,
  233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
  331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421,
  431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521,
  523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617,
  619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719,
  727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823,
  827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937,
  941, 947, 953, 967, 971, 977, 983, 991, 997, 1009, 1013, 1019, 1021, 1031,
  1033, 1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091, 1093, 1097, 1103, 1109,
  1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181, 1187, 1193, 1201, 1213, 1217,
  1223, 1229, 1231, 1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291, 1297, 1301,
  1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399, 1409, 1423, 1427,
  1429, 1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493,
  1499, 1511, 1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583, 1597,
  1601, 1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657, 1663, 1667, 1669, 1693,
  1697, 1699, 1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759, 1777, 1783, 1787,
  1789, 1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889,
  1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997, 1999,
  2003, 2011, 2017, 2027, 2029, 2039, 2053, 2063, 2069, 2081, 2083, 2087, 2089,
  2099, 2111, 2113, 2129, 2131, 2137, 2141, 2143, 2153, 2161, 2179, 2203, 2207,
  2213, 2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273, 2281, 2287, 2293, 2297,
  2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357, 2371, 2377, 2381, 2383, 2389,
  2393, 2399, 2411, 2417, 2423, 2437, 2441, 2447, 2459, 2467, 2473, 2477, 2503,
  2521, 2531, 2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593, 2609, 2617, 2621,
  2633, 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687, 2689, 2693, 2699, 2707,
  2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753, 2767, 2777, 2789, 2791, 2797,
  2801, 2803, 2819, 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903,
  2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999, 3001, 3011, 3019,
  3023, 3037, 3041, 3049, 3061, 3067, 3079, 3083, 3089, 3109, 3119, 3121, 3137,
  3163, 3167, 3169, 3181, 3187, 3191, 3203, 3209, 3217, 3221, 3229, 3251, 3253,
  3257, 3259, 3271, 3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331, 3343, 3347,
  3359, 3361, 3371, 3373, 3389, 3391, 3407, 3413, 3433, 3449, 3457, 3461, 3463,
  3467, 3469, 3491, 3499, 3511, 3517, 3527, 3529, 3533, 3539, 3541, 3547, 3557,
  3559, 3571
)
