qsort_s.c

C语言库函数的原型,有用的拿去

/***
*qsort_s.c - implementation of the quicksort algorithm
*
*   Copyright (c) Microsoft Corporation. All rights reserved.
*
*Purpose:
*   To implement the qsort_s() routine for sorting arrays.
*
*******************************************************************************/

/***
*qsort_s(base, num, wid, comp, context) - quicksort function for sorting arrays
*
*Purpose:
*   quicksort the array of elements
*   side effects:  sorts in place
*   maximum array size is number of elements times size of elements,
*   but is limited by the virtual address space of the processor
*
*Entry:
*   char *base = pointer to base of array
*   size_t num  = number of elements in the array
*   size_t width = width in bytes of each array element
*   int (*comp)() = pointer to function returning analog of strcmp for
*           strings, but supplied by user for comparing the array elements.
*           it accepts 2 pointers to elements, together with a pointer to a context.
*           Returns neg if 1<2, 0 if 1=2, pos if 1>2.
*   void *context - pointer to the context in which the function is
*           called. This context is passed to the comparison function.
*
*Exit:
*   returns void
*
*Exceptions:
*       Input parameters are validated. Refer to the validation section of the function.
*
*******************************************************************************/

#ifdef __USE_CONTEXT
#error __USE_CONTEXT should be undefined
#endif  /* __USE_CONTEXT */

#define __USE_CONTEXT
#include "qsort.c"