Excel: C and FORTRAN Data Type Equivalents of DLL Codes

 Last reviewed: November 3, 1994
Article ID: Q78760
The information in this article applies to:
  • Microsoft Excel for Windows, versions 3.0, 4.0

SUMMARY

Appendix A of the "Microsoft Excel Function Reference" describes the data type that corresponds to each letter used in the type_text parameter of a CALL or REGISTER function. However, it does not explicitly name the types. The following is a table of these types.

MORE INFORMATION

Letter  C Data Type     FORTRAN Data Type
------  -----------     -----------------

A       BOOL            n/a
        int             INTEGER * 2 [VALUE]

B       double          REAL * 8 [VALUE]

C       LPSTR           CHARACTER * n [FAR]
        char far *

D       n/a             n/a

E       double far *    REAL * 8 [FAR]

F       LPSTR           CHARACTER * n [FAR]
        char far *

G       n/a             n/a

H       WORD            INTEGER * 2 [VALUE]
        unsigned int

I       int             INTEGER * 2 [VALUE]

J       LONG            INTEGER * 4 [VALUE]
        long int

K       n/a             n/a

L       BOOL far *      INTEGER * 2 [FAR]
        int far *

M       int far *       INTEGER * 2 [FAR]

N       LONG far *      INTEGER * 4 [FAR]
        long int far *

O       int far *       INTEGER * 2 [FAR]
        int far *       INTEGER * 2 [FAR]
        double far *    REAL * 8 [FAR]

P       n/a             n/a
Several of the types (A, C, F, H, J, L, N) contain nonstandard C type names, given in capital letters. These types are defined in WINDOWS.H, the standard header file used when writing Windows-based applications in C. In these cases, the standard C type name is also given.

Data type O passes three arguments onto the stack: two far pointers to integer and one far pointer to an array of double-precision floating-point numbers.

REFERENCES

"Microsoft Excel Function Reference," pages 253-254

KBCategory: kbusage
KBSubcategory:

Additional reference words: 3.00 4.0 4.00 floating point double precision

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Last reviewed: November 3, 1994
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