nuttx/libs/libc/stdlib/lib_lldiv.c

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/****************************************************************************
* libs/libc/stdlib/lib_lldiv.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* A direct leverage of the div() inplement by:
*
* Copyright (C) 2015 Stavros Polymenis. All rights reserved.
* Author: Stavros Polymenis <sp@orbitalfox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdlib.h>
#if defined(CONFIG_CAN_PASS_STRUCTS) && defined(CONFIG_HAVE_LONG_LONG)
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lldiv
*
* Description:
* The lldiv() function computes the quotient and remainder of the division
* of the numerator 'numer' by the denominator 'denom". If the division is
* inexact, the resulting quotient is the integer of lesser magnitude that
* is the nearest to the algebraic quotient. If the result cannot be
* represented, the behavior is undefined; otherwise, quot * denom + rem
* will equal 'numer'.
*
* Input Parameters:
* numer - Numerator of the Division
* denom - Denominator of the division
*
* Returned Value:
* The result of the devision represent as values of type lldiv_t
*
****************************************************************************/
lldiv_t lldiv(long long numer, long long denom)
{
lldiv_t f;
f.quot = numer / denom;
f.rem = numer % denom;
return f;
}
#endif /* CONFIG_CAN_PASS_STRUCTS && CONFIG_HAVE_LONG_LONG */