67ec3d7926
This commit resolves issue #620: Remove CONFIG_CAN_PASS_STRUCTS #620 The configuration option CONFIG_CAN_PASS_STRUCTS was added many years ago to support an old version of the SDCC compiler. That compiler is currently used only with the Z80 and Z180 targets. The limitation of that old compiler was that it could not pass structures or unions as either inputs or outputs. For example: #ifdef CONFIG_CAN_PASS_STRUCTS struct mallinfo mallinfo(void); #else int mallinfo(FAR struct mallinfo *info); #endif And even leads to violation of a few POSIX interfaces like: #ifdef CONFIG_CAN_PASS_STRUCTS int sigqueue(int pid, int signo, union sigval value); #else int sigqueue(int pid, int signo, FAR void *sival_ptr); #endif This breaks the 1st INVIOLABLES rule: Strict POSIX compliance ----------------------- o Strict conformance to the portable standard OS interface as defined at OpenGroup.org. o A deeply embedded system requires some special support. Special support must be minimized. o The portable interface must never be compromised only for the sake of expediency. o Expediency or even improved performance are not justifications for violation of the strict POSIX interface Also, it appears that the current SDCC compilers have resolve this issue and so, perhaps, this is no longer a problem: z88dk/z88dk#1132 NOTE: This commit cannot pass the PR checks because it depends on matching changes to the apps/ directory.
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/****************************************************************************
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* libs/libc/stdlib/lib_lldiv.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* A direct leverage of the div() inplement by:
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*
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* Copyright (C) 2015 Stavros Polymenis. All rights reserved.
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* Author: Stavros Polymenis <sp@orbitalfox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <stdlib.h>
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#if defined(CONFIG_HAVE_LONG_LONG)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lldiv
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*
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* Description:
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* The lldiv() function computes the quotient and remainder of the division
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* of the numerator 'numer' by the denominator 'denom". If the division is
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* inexact, the resulting quotient is the integer of lesser magnitude that
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* is the nearest to the algebraic quotient. If the result cannot be
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* represented, the behavior is undefined; otherwise, quot * denom + rem
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* will equal 'numer'.
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*
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* Input Parameters:
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* numer - Numerator of the Division
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* denom - Denominator of the division
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*
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* Returned Value:
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* The result of the devision represent as values of type lldiv_t
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*
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****************************************************************************/
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lldiv_t lldiv(long long numer, long long denom)
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{
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lldiv_t f;
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f.quot = numer / denom;
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f.rem = numer % denom;
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return f;
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}
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#endif /* CONFIG_HAVE_LONG_LONG */
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