HP 3000 Manuals HP 3000 Manuals
Procedures
Table 2-7. Procedures
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| | |
| SPL | HP C/XL Equivalent |
| | |
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| | |
| An SPL procedure can be passed parameters, | An HP C/XL function can be passed |
| either by reference or by value. | parameters, but always by value. |
| | |
| | Pass-by-reference is emulated by explicitly |
| | passing an address pointer and |
| | dereferencing that pointer within the |
| | function. (Array identifiers appear to be |
| | passed by reference; they are passed as |
| | pointers.) |
| | |
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| | |
| Can declare local variables and reference | Same as SPL. |
| global variables. | |
| | |
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| | |
| Can return a value. | Same as SPL. |
| | |
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| | |
| Can call themselves. | Same as SPL. |
| | |
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| Can be called from other procedures and | Can be called from other functions and from |
| from the main block. | the main function. |
| | |
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| | |
| Can contain local subroutines. | Cannot contain nested functions. The |
| | closest HP C/XL equivalent is the #define |
| | macro directive (see "Subroutines" below). |
| | |
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