Mercurial > hg > octave-shane > gnulib-hg
view lib/imaxdiv.c @ 15727:144db791c6fa
Ensure EBADF returns for socket functions on mingw.
* lib/accept.c (rpl_accept): Fail with error EBADF if the file
descriptor is invalid.
* lib/bind.c (rpl_bind): Likewise.
* lib/connect.c (rpl_connect): Likewise.
* lib/getpeername.c (rpl_getpeername): Likewise.
* lib/getsockname.c (rpl_getsockname): Likewise.
* lib/getsockopt.c (rpl_getsockopt): Likewise.
* lib/listen.c (rpl_listen): Likewise.
* lib/recv.c (rpl_recv): Likewise.
* lib/recvfrom.c (rpl_recvfrom): Likewise.
* lib/send.c (rpl_send): Likewise.
* lib/sendto.c (rpl_sendto): Likewise.
* lib/setsockopt.c (rpl_setsockopt): Likewise.
* lib/shutdown.c (rpl_shutdown): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Wed, 21 Sep 2011 00:20:59 +0200 |
parents | 97fc9a21a8fb |
children | 8250f2777afc |
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/* imaxdiv() function: division of 'intmax_t'. Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> /* Specification. */ #include <inttypes.h> #include <stdlib.h> imaxdiv_t imaxdiv (intmax_t numer, intmax_t denom) { imaxdiv_t result; result.quot = numer / denom; result.rem = numer % denom; /* Verify the requirements of ISO C 99 section 6.5.5 paragraph 6: "When integers are divided, the result of the / operator is the algebraic quotient with any fractional part discarded. (This is often called "truncation toward zero".) If the quotient a/b is representable, the expression (a/b)*b + a%b shall equal a." */ if (!(denom == 0 || (INTMAX_MIN + INTMAX_MAX < 0 && denom == -1 && numer < - INTMAX_MAX))) { if (!(result.quot * denom + result.rem == numer)) /* The compiler's implementation of / and % is broken. */ abort (); if (!(numer >= 0 ? result.rem >= 0 && (denom >= 0 ? result.rem < denom : /* Don't write result.rem < - denom, as it gives integer overflow if denom == INTMAX_MIN. */ - result.rem > denom) : result.rem <= 0 && (denom >= 0 ? result.rem > - denom : result.rem > denom))) /* The compiler's implementation of / and % may be ok according to C89, but not to C99. Please report this to <bug-gnulib@ngu.org>. This might be a big portability problem. */ abort (); } return result; }