numbck.f File Reference

Check the validity of an FXY value. More...

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Functions/Subroutines
function	numbck (NUMB)
	This function checks the input character string to determine whether it contains a valid FXY (descriptor) value. More...

Detailed Description

Check the validity of an FXY value.

Author

Woollen

Date

1994-01-06

Definition in file numbck.f.

Function/Subroutine Documentation

numbck()

function numbck

(

character*6

NUMB

)

This function checks the input character string to determine whether it contains a valid FXY (descriptor) value.

Parameters

[in]

NUMB

- character*6: FXY value to be checked.

Returns

indicator as to whether numb is valid:.

• 0 yes
• -1 no, the first character ("F" value) is not '0', '1', '2', or '3'
• -2 no, characters 2-6 ("X" and "Y" values) are not all numeric
• -3 no, characters 2-3 ("X" value) are not between '00' and '63'
• -4 no, characters 4-6 ("Y" value) are not between '000' and '255'

Author

Woollen

Date

1994-01-06

Definition at line 19 of file numbck.f.

References digit().

Referenced by igetfxy(), and rdusdx().