pkftbv.f File Reference

Determine the numerical data value equivalent to the setting of a specified bit within a flag table. More...

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Functions/Subroutines
REAL *8 function	pkftbv (NBITS, IBIT)
	This function computes the numerical value equivalent to the setting of bit #IBIT within a flag table of NBITS bits. More...

Detailed Description

Determine the numerical data value equivalent to the setting of a specified bit within a flag table.

Definition in file pkftbv.f.

Function/Subroutine Documentation

REAL*8 function pkftbv	(		NBITS,
			IBIT
	)

This function computes the numerical value equivalent to the setting of bit #IBIT within a flag table of NBITS bits.

If the computation fails for any reason, then the function returns the current placeholder value for "missing" data.

Author

J. Ator

Date

2005-11-29

Parameters

[in]	NBITS	- integer: Total number of bits in flag table
[in]	IBIT	- integer: Number of bit to be set

Returns

pkftbv - real*8: Value equivalent to the setting of bit #IBIT within a flag table of NBITS bits

Remarks

• This function is the logical inverse of subroutine upftbv().
• According to the WMO standard, bits within a bit field are numbered from left to right, so bit #1 is always the high-order (i.e. most significant) bit in any bit field.

Program history log:

• 2005-11-29 J. Ator – Original version

Definition at line 29 of file pkftbv.f.