56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/***
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*calloc.c - allocate storage for an array from the heap
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*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Defines the calloc() function.
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*
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*******************************************************************************/
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#include <malloc.h>
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#include <string.h>
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#include <winheap.h>
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#include <windows.h>
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#include <internal.h>
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#include <mtdll.h>
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#include <dbgint.h>
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#include <rtcsup.h>
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void * __cdecl _calloc_impl (size_t num, size_t size, int * errno_tmp);
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/***
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*void *calloc(size_t num, size_t size) - allocate storage for an array from
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* the heap
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*
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*Purpose:
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* Allocate a block of memory from heap big enough for an array of num
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* elements of size bytes each, initialize all bytes in the block to 0
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* and return a pointer to it.
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*
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*Entry:
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* size_t num - number of elements in the array
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* size_t size - size of each element
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*
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*Exit:
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* Success: void pointer to allocated block
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* Failure: NULL
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*
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*Uses:
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*
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*Exceptions:
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*
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*******************************************************************************/
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void * __cdecl _calloc_base (size_t num, size_t size)
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{
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int errno_tmp = 0;
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void * pv = _calloc_impl(num, size, &errno_tmp);
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if ( pv == NULL && errno_tmp != 0 && _errno())
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{
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errno = errno_tmp; // recall, #define errno *_errno()
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}
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return pv;
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}
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