To: J3 J3/23-121 From: John Reid Subject: Omission in IEEE_SCALB Date: 2023-February-16 Introduction ^^^^^^^^^^^^ Malcolm Cohen has pointed out to me that the DIS says in 17.1: "The intrinsic modules IEEE_EXCEPTIONS, IEEE_ARITHMETIC, and IEEE_FEATURES provide support for the facilities defined by ISO/IEC 60559:2020." but IEEE_SCALB (X,I) does not support real values for the argument I. I think this was an oversight when Fortran 2018 was updated for ISO/IEC/IEEE 60559:2011, see J3/14-196. This means that there is an inconsistency in Fortran 2018 which is present in the DIS. I propose edits to the DIS here but I recognize that it may be more appropriate to move them in an interpretation. Edits to the DIS ^^^^^^^^^^^^^^^ In 17.9 IEEE arithmetic, para 1, final bullet, after "logB," add "scaleB," and after "IEEE_LOGB," add "IEEE_SCALB," so that the bullet reads "the IEEE functions copySign, logB, scaleB, and compareQuietUnordered shall be provided by the functions IEEE_COPY_SIGN, IEEE_LOGB, IEEE_SCALB, and IEEE_UNORDERED, respectively," In 17.11.37 IEEE_SCALB (X, I), Arguments, I, change "integer" to "integer or real with the same kind type parameter as X" so that the line reads "I shall be of type integer or real with the same kind type parameter as X."