This function is obsolete and exists for compatibility with
previous releases. It is replaced by
XXXXmmmmSSSSttttrrrriiiinnnnggggBBBByyyytttteeeeSSSSttttrrrreeeeaaaammmmLLLLeeeennnnggggtttthhhh. XXXXmmmmSSSSttttrrrriiiinnnnggggLLLLeeeennnnggggtttthhhhobtains the length
of a compound string. It returns the number of bytes in _s_1
including all tags, direction indicators, and separators. If
the compound string has an invalid structure, 0 (zero) is
returned.
_s_1 Specifies the compound string
RRRREEEETTTTUUUURRRRNNNN
Returns the length of the compound string.
RRRREEEELLLLAAAATTTTEEEEDDDD
XXXXmmmmSSSSttttrrrriiiinnnnggggBBBByyyytttteeeeSSSSttttrrrreeeeaaaammmmLLLLeeeennnnggggtttthhhh(3) and XXXXmmmmSSSSttttrrrriiiinnnnggggCCCCrrrreeeeaaaatttteeee(3).