Differences between 754 and 854

David James pointed out some other instances where 854 and 754 diverge, aside from the formats sections 3.1-3.3; when I looked further I found a number, including these more significant ones:

• all: "precision" generally replaces "format"
• all: "convert between internal floating-point representations and decimal strings" generally replaces "binary <-> decimal conversion"
• all: "subnormal" generally replaces "denormalized"
• all: radix point replaces binary point
• 1.2(1): Constraints on format parameters of precisions rather than formats.
• 1.3(1): Formats and encodings not specified.
• 2 exponent: "signed" and "unbiased" are italicized
• 2: floating-point number defined.
• 2: normal number defined
• 2: radix defined
• 2: significand defined for general radix
• 3.1: note typo in 854 middle of second column, after "Numbers of the form ... (d0d1d2... needs a point between d0 and d1.
• 4.1: round to infinity threshold formula for general radix
• 5.4: fp->int adds "When no other exception arises, this operation signals inexact whenever its results differs in value from its operand."
• 5.5: fp->integral adds "This operation signals inexact whenever its results differs in value from its operand. This operation leaves zeros and infinities unchagned."
• 5.6: base conversion - quite a bit more added, most good, and the following nonsense jumbled lines at the end of page 11:

  
  "Either 
  ### floating-point shall be the identity as long as the
  ### decimal string is carried to the maximum preci-
  ### sion specified in Table 1, namely, MaxD digits.[5]
  representation may be produced on output; both should
  be accepted on input."
  
  

  The ### lines are a typo repeat from the head of that column that should have been omitted.
• 6.3: algebraic sign - "The sign of the result of the operation that rounds floating-point numbers to integral values (5.5), and of precision [### note "conversions" missing in 854 text] (5.3), and decimal string (5.6) conversion shall be the sign of the operand." Tydeman: At the start of the first paragraph, 854 has sign of NaN not determined, while 754 has sign of NaN not interpreted. 854 requires that -0.0 when converted to integer encoding preserve that sign (if possible).
• 7.1: invalid operation - first paragraph of 854 omits "provided the destination has a floating-point format".
• 7.1(8) 854 adds "conversion of an unrecognizable input string"
• 7.3 754 "exponent bias" replaced by 854 "exponent"
• 7.4 underflow - choices are labeled (1) (2) and (1) (2) instead of (1) (2) and (3) (4).
• App (3) scalb - overflow/underflow defined.
• App (4) logb - 854 normalizes argument first. 854 has typo "For x positive and finite" should be "For x non-zero and finite".
• App (11) conv added.
• App (12) nearbyinteger added.