85 lines
3.4 KiB
C
85 lines
3.4 KiB
C
/****************************************************************************
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* 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_CAN_PASS_STRUCTS) && 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_CAN_PASS_STRUCTS && CONFIG_HAVE_LONG_LONG */ |