a # 1 60 R ' c#a fsub b                                                 '
a # a,[1]  ' c#(a#float a)fadd(1Yb),_1Ub#float b                        '
a # a,[1]  ' $0                                                         '
a # a,[1]  '"fsub - multiprecision floating point subtraction           '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
a # a,[1]  '"-subtract b from a, using multiprecision floating point    '
a # a,[1]  '" arithmetic.  a and b may be in any numeric format.        '
a # a,[1]  '" (see description under Gfadd)                             '
a # a,[1]  '"-uses: Gfloat Gfadd.                                       '
Lfx a