J3/17-125r2
To: J3
From: John Reid & Bill Long & Jon Steidel
Subject: Team number for initial team
Date: 2017 February 15

Discussion
----------
If TEAM_NUMBER is invoked for the initial team, the value returned is
-1, which is not valid as a team number in an image selector or an
invocation of IMAGE_INDEX or NUM_IMAGES.

Edits to 17-007
---------------

[xx bullet starting on xix in Introduction, Features previously
described by ISO/IEC TS 18508:2015:] Add following sentence before
sentence starting "The new intrinsic subroutines CO_BROADCAST,..."

   "Additionally, the team number for the initial team is now allowed
    in image selectors, and in the intrinsics NUM_IMAGES and
    IMAGE_INDEX."

{Note that this is a technical change from the TS}

[22:36] In 3.145.4 definition of the term "team number", replace the
        definition with "integer value that identifies a team within
        its parent team, or the value -1 if there is no parent team".

{Change definition of team number to establish -1 as the team number of
 the initial team.}

[140:2] In 9.6 Image selectors, para 3, before the final sentence, add
        "If a TEAM_NUMBER=specifier appears in an <image-selector> and the
        current team is the initial team, the value of scalar-<int-expr>
        shall be the team number for the initial team; the object shall be
        an established coarray in the initial team."

{Define behavior of a TEAM_NUMBER present in an image selector when the
current team is the initial team.}


[394:11] In 16.9.97 IMAGE_INDEX (COARRAY, SUB) ..., para
         TEAM_NUMBER, change
                 "positive integer scalar." to
                 "an integer scalar that identifies a team."

{Allow initial team number, -1, in IMAGE_INDEX intrinsic.}

[415:26] In 16.9.145 NUM_IMAGES ( ) ..., para 3, TEAM_NUMBER, change
                 "positive integer scalar." to
                 "an integer scalar that identifies a team."

{Allow initial team number, -1, in NUM_IMAGES intrinsic.)

[434:24] In 16.9.189 TEAM_NUMBER([TEAM]), p5, change the beginning of
         the Result Value from "If the specified team is the initial
         team, the result value is -1; otherwise, the" to "The".

{Remove redundant -1 for the special case of the initial team.}


[END]