From owner-sc22wg5+sc22wg5-dom9=www.open-std.org@open-std.org Tue Aug 11 01:00:20 2020 Return-Path: X-Original-To: sc22wg5-dom9 Delivered-To: sc22wg5-dom9@www.open-std.org Received: by www.open-std.org (Postfix, from userid 521) id A02AF358556; Tue, 11 Aug 2020 01:00:20 +0200 (CEST) Delivered-To: sc22wg5@open-std.org Received: from mail-qk1-f178.google.com (mail-qk1-f178.google.com [209.85.222.178]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by www.open-std.org (Postfix) with ESMTP id 3C6673571D3 for ; Tue, 11 Aug 2020 01:00:20 +0200 (CEST) Received: by mail-qk1-f178.google.com with SMTP id b79so10031375qkg.9 for ; Mon, 10 Aug 2020 16:00:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stevelionel.com; s=google; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding:content-language; bh=rFW7JwGeyFLfBhYzGL8A6eC+ReFzwWmMWDXZTwqiPEM=; b=BpRRQJrqVxXyQQwDR8wr2xAXt7cl/iPLl71BztQz+Wqc16XeGV307CUzq1IixrqgPj IW1FPnr+2BOsfxewPvMdgheUAMWzJ7X/t1hmbCDPddkFwhaclfZFUhbNz9YjgReonqZE PqFlePuPGesvu3Sa9u9qfwLRTG3oXewKo7gQQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-transfer-encoding:content-language; bh=rFW7JwGeyFLfBhYzGL8A6eC+ReFzwWmMWDXZTwqiPEM=; b=cyqxPDjg05JA2V56ZTTZSw6wMxUnGbYsa4Ub8YWvLgwufwQJnUGQLa71mfCUnTofU/ Wkohw+RGpkt1igOM5aky0G+k8efiTHKWJREAtibkt2QqJ8gpXM7kE9CK/1wA6DTV73sG ucnq3JP+C3YKmCUAaTliPsN+cDaNa4BrTu1ejV4uwHAljLsKs39WBs46e8bb4Y3IM+O3 e3F47MvgOCNy9CIeQIrwf409AlP3stz6FXv81y4ttVjtLOQrdBx/0DjxBOE549gqSYUr qnCIkJZyfBLvrIuYNcuUCyGEpx61mDbMoJ4iuCsf3XhnmVuBs8WHFctZNVoE1UyVxBJK fWRA== X-Gm-Message-State: AOAM531PNg3mBebKqSKp9Gf/w7DB5OriqAwgbZY4fskQ5jlYM9JoGeMk ll4YyiBU9dj6kvHuhhxTxlcBYu7dig8= X-Google-Smtp-Source: ABdhPJzVMopF4BfuPd42KaKgAvscFce9lL6X3oNvspsZm05CD0MyXy2spuF0SC4CSyl6WbQ9ABLDUQ== X-Received: by 2002:a05:620a:12af:: with SMTP id x15mr27348857qki.441.1597100418076; Mon, 10 Aug 2020 16:00:18 -0700 (PDT) Received: from [192.168.1.2] ([71.255.115.200]) by smtp.gmail.com with ESMTPSA id x67sm15722818qke.136.2020.08.10.16.00.17 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 10 Aug 2020 16:00:17 -0700 (PDT) To: WG5 List From: Steve Lionel Subject: Fortran 90 and BOZ literals X-Clacks-Overhead: GNU Terry Pratchett Message-ID: Date: Mon, 10 Aug 2020 19:00:15 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: owner-sc22wg5@open-std.org Precedence: bulk I am working on a "Doctor Fortran" post about BOZ constants, and ran across something very odd in Fortran 90: R408 binary-constant is B ’ digit [ digit ] ... ’                      or B Constraint: digit must have one of the values 0 or 1. R409 octal-constant is O ’ digit [ digit ] ... ’                     or O Constraint: digit must have one of the values 0 through 7. R410 hex-constant is Z ’ hex-digit [ hex-digit ] ... ’                   or Z The text never explains what a bare B, O or Z means. This is gone in Fortran 95 and I didn't see any mention of it in the three Fortran 90 corrigenda. What was this supposed to be? (If you get this on the J3 list, please reply to the WG5 list - thanks.) Steve