1 05/15/80  mrds.builtins
 2 
 3 Function:  This describes, briefly, the builtin functions avaiable to MRDS
 4 database users in evaluating selection expressions.
 5 
 6 
 7 Builtin funtions:
 8 abs (X)
 9    gives absolute value of X, X must be numeric.
10 after (S1 S2)
11    returns portion of S1 after leftmost occurrence of S2, both string types.
12 before (S1 S2)
13    returns portion of S1 before leftmost occurrence of S2, both string types.
14 ceil (X)
15    returns smallest interger >= X, X must be real.
16 concat (S1 S2)
17    returns the concatenation of strings S1 and S2.
18 floor (X)
19    returns the largest integer <= X, X must be real.
20 index (S1 S2)
21    returns position of leftmost occurence of S2 within S1, both string types.
22 mod (X Y)
23    returns X modulo Y, X and Y must be real.
24 reverse (S)
25    returns a string, which is the reverse of S, S must be string data type.
26 round (X Q)
27    returns X rounded to Q fractional digits, X real, Q integer.
28 search (S1 S2)
29    returns position in S1 of leftmost occurrence of any character in S2.
30 substr (S I J)
31    returns portion of S from Ith character, of length J.
32 verify (S1 S2)
33    returns position of first character of S1 that does not occur in S2.