[MLton-commit] r5748

[Vesa Karvonen]

Added largestPrime.  The primes, except for n<8, were obtained from

  http://primes.utm.edu/lists/2small/0bit.html .

----------------------------------------------------------------------

U   mltonlib/trunk/com/ssh/extended-basis/unstable/detail/numeric/mk-word-ext.fun
U   mltonlib/trunk/com/ssh/extended-basis/unstable/public/numeric/word.sig

----------------------------------------------------------------------

Modified: mltonlib/trunk/com/ssh/extended-basis/unstable/detail/numeric/mk-word-ext.fun
===================================================================
--- mltonlib/trunk/com/ssh/extended-basis/unstable/detail/numeric/mk-word-ext.fun	2007-07-09 17:00:15 UTC (rev 5747)
+++ mltonlib/trunk/com/ssh/extended-basis/unstable/detail/numeric/mk-word-ext.fun	2007-07-10 00:04:25 UTC (rev 5748)
@@ -21,6 +21,27 @@
       type shiftable = t
       type stringable = t
       type wordable = t
+      val largestPrime =
+          (~ o fromInt)
+             (case wordSize of
+                 1  =>   1 | 2  =>   1 | 3  =>   1 | 4  =>   3
+               | 5  =>   1 | 6  =>   3 | 7  =>   1 | 8  =>   5
+               | 9  =>   3 | 10 =>   3 | 11 =>   9 | 12 =>   3
+               | 13 =>   1 | 14 =>   3 | 15 =>  19 | 16 =>  15
+               | 17 =>   1 | 18 =>   5 | 19 =>   1 | 20 =>   3
+               | 21 =>   9 | 22 =>   3 | 23 =>  15 | 24 =>   3
+               | 25 =>  39 | 26 =>   5 | 27 =>  39 | 28 =>  57
+               | 29 =>   3 | 30 =>  35 | 31 =>   1 | 32 =>   5
+               | 33 =>   9 | 34 =>  41 | 35 =>  31 | 36 =>   5
+               | 37 =>  25 | 38 =>  45 | 39 =>   7 | 40 =>  87
+               | 41 =>  21 | 42 =>  11 | 43 =>  57 | 44 =>  17
+               | 45 =>  55 | 46 =>  21 | 47 => 115 | 48 =>  59
+               | 49 =>  81 | 50 =>  27 | 51 => 129 | 52 =>  47
+               | 53 => 111 | 54 =>  33 | 55 =>  55 | 56 =>   5
+               | 57 =>  13 | 58 =>  27 | 59 =>  55 | 60 =>  93
+               | 61 =>   1 | 62 =>  57 | 63 =>  25 | 64 =>  59
+               | _  => raise Fail ("largestPrime less than pow (2, "^
+                                   BasisInt.toString wordSize^") not known"))
       val bounds = (fromInt 0, fromInt~1)
       val numBytes = BasisInt.quot (BasisInt.+ (wordSize, 7), 8)
       local

Modified: mltonlib/trunk/com/ssh/extended-basis/unstable/public/numeric/word.sig
===================================================================
--- mltonlib/trunk/com/ssh/extended-basis/unstable/public/numeric/word.sig	2007-07-09 17:00:15 UTC (rev 5747)
+++ mltonlib/trunk/com/ssh/extended-basis/unstable/public/numeric/word.sig	2007-07-10 00:04:25 UTC (rev 5748)
@@ -32,6 +32,9 @@
     * is always equal to {(wordSize + 7) quot 8}.
     *)
 
+   val largestPrime : t
+   (** Largest prime that fits in the word. *)
+
    (** == Conversions == *)
 
    val fromBigBytes : Word8Vector.t -> t