This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP
internaldict v6.3+dict evalfunc -
This operator takes a function dictionary (types 0, 2 or 3 only), as defined in the PostScript® Language Reference Manual, Third Edition Section 3.10, and the function's input values, as operands and returns the result on the stack.
A simple example follows:
/FuncDict <<
/FunctionType 0
/Domain [ 0 10 ]/Decode [ 0 255 ]
/Range [ 0 100] /BitsPerSample 8
/DataSource < 00 0A 14 1E 28 32 3C 46 50 5A 64 >
/Size [ 11 ]
>> def
5 FuncDict 1183615869 internaldict /evalfunc get exec
The above PostScript fragment would leave the single value 50.0 on the operand stack.