ucx: src/ucx.c@3d80d425543b

     1 /**

     2  * @mainpage UAP Common Extensions

     3  * Library with common and useful functions, macros and data structures.

     4  * <p>

     5  * Latest available source:<br>

     6  * <a href="https://sourceforge.net/projects/ucx/files/">

     7  * https://sourceforge.net/projects/ucx/files/</a>

     8  * </p>

     9  *

    10  * <p>

    11  * Repositories:<br>

    12  * <a href="https://sourceforge.net/p/ucx/code">

    13  * https://sourceforge.net/p/ucx/code</a>

    14  * -&nbsp;or&nbsp;-

    15  * <a href="https://develop.uap-core.de/hg/ucx">

    16  * https://develop.uap-core.de/hg/ucx</a>

    17  * </p>

    18  *

    19  * <h2>LICENCE</h2>

    20  *

    21  * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.

    22  *

    23  * Redistribution and use in source and binary forms, with or without

    24  * modification, are permitted provided that the following conditions are met:

    25  *

    26  *   1. Redistributions of source code must retain the above copyright

    27  *      notice, this list of conditions and the following disclaimer.

    28  *

    29  *   2. Redistributions in binary form must reproduce the above copyright

    30  *      notice, this list of conditions and the following disclaimer in the

    31  *      documentation and/or other materials provided with the distribution.

    32  *

    33  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    34  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    36  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    37  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    38  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    39  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    40  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    41  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    42  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    43  * POSSIBILITY OF SUCH DAMAGE.

    44  */

    46 #include "ucx/ucx.h"

    48 #ifndef UCX_MUL_BUILTIN

    49 int ucx_szmul(size_t a, size_t b, size_t *result) {

    50     if(a == 0 || b == 0) {

    51         *result = 0;

    52         return 1;

    53     }

    54     size_t r = a * b;

    55     if(r / b == a) {

    56         *result = r;

    57         return 0;

    58     } else {

    59         *result = 0;

    60         return 1;

    61     }

    62 }

    63 #endif

Mercurial > hg > ucx / file revision