getablexprmin(3alc)

1GETABLEXPRMIN(3)                 ABL FUNCTIONS                GETABLEXPRMIN(3)
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NAME

6       getablexprmin - applies a function to all operands.
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SYNOPSIS

9       #include "abl101.h"
10       chain_list ∗getablexprmin( Function, Expr )
11         int       (∗Function)();
12         chain_list ∗Expr;
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PARAMETERS

15       Function            Cost function.
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17       Expr                Expression to scan.
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DESCRIPTION

20       getablexprmin  applies  the  cost  function Function to all operands of
21       Expr.
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RETURN VALUE

24       getablexprmin returns the operand for which unction gives  the  minimum
25       cost.   The  expression  pointer returned MUSTN'T be modified after the
26       call to this function.
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ERRORS

29       getablexprmin error ...
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EXAMPLE

32       #include "abl101.h"
33           int MapFunction( MapExpr )
34             chain_list ∗MapExpr;
35           {
36             return( getabldepthexpr( MapExpr ) );
37           }
38           ...
39           chain_list ∗Expr;
40           chain_list ∗Expr1;
41           Expr = createablbinexpr( ABL_AND,
42                                    createablatom( "a" ),
43                                    createablatom( "b" ) );
44          Expr1 = getablexprmin( MapFunction, Expr );
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