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* $Id$ |
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* |
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* $Log$ |
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* |
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* |
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* xalgdata.inc |
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* |
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*CMZ : 3.00/00 02/05/2001 20.42.25 by Unknown |
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*-- Author : |
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*----------------------------------------------------------------------- |
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* ALGDAT - Common block containing the executable statements for the |
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* evaluation of symbolic expressions. |
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* VARIABLES : INS(I, . ) : List of instructions, the first element is |
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* a register address (in case of a normal |
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* operation) or a function descriptor, the |
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* second is the operator, the third an addres |
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* and the fourth the address of the result. |
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* NINS : Number of instructions in INS. |
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* REG(I) : Contents of register I, REG(0)=0, REG(-1)=1 |
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* and REG(-2)=2, REG(-3)=pi. |
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* NREG : Number of registers in use. |
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* EXEC(I) : .TRUE. if instruction I is to be executed. |
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* NERR : Number of errors since last call to ALGPRE. |
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* NAERR : Individual error counts. |
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* NRES : Number of independent results. |
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* ALGENT(I,.): Instruction list entry refernce table. |
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* 1: reference no, 2: in use 0/1, 3: can be |
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* executed 0/1, 4: sequential 0/1, 5: first |
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* instruction, 6: no of instructions, 7: no |
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* of variables, 8: first constant, 9: no of |
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* constants, 10: no of results. |
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* ARGREF(I,1): Modification flag for arguments, |
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* 0: modifiable global variable, |
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* 1: modifiable non-global variable, |
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* 2: non-modifiable global variable, |
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* 3: non-modifiable non-global variable. |
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* ARGREF(I,2): Origin of each argument. |
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* NALGE : Number of entries in use in ALGENT. |
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* ISYNCH : 0: no check, 1: algebra, 2: procedure |
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* LIGUND : Ignore exponential underflow |
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* (Last changed on 3/ 6/97.) |
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*----------------------------------------------------------------------- |