/* * Copyright (c) Yann Collet, Facebook, Inc. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the * LICENSE file in the root directory of this source tree) and the GPLv2 (found * in the COPYING file in the root directory of this source tree). * You may select, at your option, one of the above-listed licenses. */   /*-**************************************  Dependencies***************************************/#define ZSTD_DEPS_NEED_MALLOC#include "zstd_deps.h"   /* ZSTD_malloc, ZSTD_calloc, ZSTD_free, ZSTD_memset */#include "error_private.h"#include "zstd_internal.h"  /*-*****************************************  Version******************************************/unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; } const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }  /*-*****************************************  ZSTD Error Management******************************************/#undef ZSTD_isError   /* defined within zstd_internal.h *//*! ZSTD_isError() : *  tells if a return value is an error code *  symbol is required for external callers */unsigned ZSTD_isError(size_t code) { return ERR_isError(code); } /*! ZSTD_getErrorName() : *  provides error code string from function result (useful for debugging) */const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); } /*! ZSTD_getError() : *  convert a `size_t` function result into a proper ZSTD_errorCode enum */ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); } /*! ZSTD_getErrorString() : *  provides error code string from enum */const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); }   /*=***************************************************************  Custom allocator****************************************************************/void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem){    if (customMem.customAlloc)        return customMem.customAlloc(customMem.opaque, size);    return ZSTD_malloc(size);} void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem){    if (customMem.customAlloc) {        /* calloc implemented as malloc+memset;         * not as efficient as calloc, but next best guess for custom malloc */        void* const ptr = customMem.customAlloc(customMem.opaque, size);        ZSTD_memset(ptr, 0, size);        return ptr;    }    return ZSTD_calloc(1, size);} void ZSTD_customFree(void* ptr, ZSTD_customMem customMem){    if (ptr!=NULL) {        if (customMem.customFree)            customMem.customFree(customMem.opaque, ptr);        else            ZSTD_free(ptr);    }}