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-rw-r--r--Modules/_decimal/libmpdec/mpalloc.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/Modules/_decimal/libmpdec/mpalloc.c b/Modules/_decimal/libmpdec/mpalloc.c
deleted file mode 100644
index a854e09..0000000
--- a/Modules/_decimal/libmpdec/mpalloc.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * Copyright (c) 2008-2016 Stefan Krah. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-
-#include "mpdecimal.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include "typearith.h"
-#include "mpalloc.h"
-
-
-#if defined(_MSC_VER)
- #pragma warning(disable : 4232)
-#endif
-
-
-/* Guaranteed minimum allocation for a coefficient. May be changed once
- at program start using mpd_setminalloc(). */
-mpd_ssize_t MPD_MINALLOC = MPD_MINALLOC_MIN;
-
-/* Custom allocation and free functions */
-void *(* mpd_mallocfunc)(size_t size) = malloc;
-void *(* mpd_reallocfunc)(void *ptr, size_t size) = realloc;
-void *(* mpd_callocfunc)(size_t nmemb, size_t size) = calloc;
-void (* mpd_free)(void *ptr) = free;
-
-
-/* emulate calloc if it is not available */
-void *
-mpd_callocfunc_em(size_t nmemb, size_t size)
-{
- void *ptr;
- size_t req;
- mpd_size_t overflow;
-
-#if MPD_SIZE_MAX < SIZE_MAX
- /* full_coverage test only */
- if (nmemb > MPD_SIZE_MAX || size > MPD_SIZE_MAX) {
- return NULL;
- }
-#endif
-
- req = mul_size_t_overflow((mpd_size_t)nmemb, (mpd_size_t)size,
- &overflow);
- if (overflow) {
- return NULL;
- }
-
- ptr = mpd_mallocfunc(req);
- if (ptr == NULL) {
- return NULL;
- }
- /* used on uint32_t or uint64_t */
- memset(ptr, 0, req);
-
- return ptr;
-}
-
-
-/* malloc with overflow checking */
-void *
-mpd_alloc(mpd_size_t nmemb, mpd_size_t size)
-{
- mpd_size_t req, overflow;
-
- req = mul_size_t_overflow(nmemb, size, &overflow);
- if (overflow) {
- return NULL;
- }
-
- return mpd_mallocfunc(req);
-}
-
-/* calloc with overflow checking */
-void *
-mpd_calloc(mpd_size_t nmemb, mpd_size_t size)
-{
- mpd_size_t overflow;
-
- (void)mul_size_t_overflow(nmemb, size, &overflow);
- if (overflow) {
- return NULL;
- }
-
- return mpd_callocfunc(nmemb, size);
-}
-
-/* realloc with overflow checking */
-void *
-mpd_realloc(void *ptr, mpd_size_t nmemb, mpd_size_t size, uint8_t *err)
-{
- void *new;
- mpd_size_t req, overflow;
-
- req = mul_size_t_overflow(nmemb, size, &overflow);
- if (overflow) {
- *err = 1;
- return ptr;
- }
-
- new = mpd_reallocfunc(ptr, req);
- if (new == NULL) {
- *err = 1;
- return ptr;
- }
-
- return new;
-}
-
-/* struct hack malloc with overflow checking */
-void *
-mpd_sh_alloc(mpd_size_t struct_size, mpd_size_t nmemb, mpd_size_t size)
-{
- mpd_size_t req, overflow;
-
- req = mul_size_t_overflow(nmemb, size, &overflow);
- if (overflow) {
- return NULL;
- }
-
- req = add_size_t_overflow(req, struct_size, &overflow);
- if (overflow) {
- return NULL;
- }
-
- return mpd_mallocfunc(req);
-}
-
-
-/* Allocate a new decimal with a coefficient of length 'nwords'. In case
- of an error the return value is NULL. */
-mpd_t *
-mpd_qnew_size(mpd_ssize_t nwords)
-{
- mpd_t *result;
-
- nwords = (nwords < MPD_MINALLOC) ? MPD_MINALLOC : nwords;
-
- result = mpd_alloc(1, sizeof *result);
- if (result == NULL) {
- return NULL;
- }
-
- result->data = mpd_alloc(nwords, sizeof *result->data);
- if (result->data == NULL) {
- mpd_free(result);
- return NULL;
- }
-
- result->flags = 0;
- result->exp = 0;
- result->digits = 0;
- result->len = 0;
- result->alloc = nwords;
-
- return result;
-}
-
-/* Allocate a new decimal with a coefficient of length MPD_MINALLOC.
- In case of an error the return value is NULL. */
-mpd_t *
-mpd_qnew(void)
-{
- return mpd_qnew_size(MPD_MINALLOC);
-}
-
-/* Allocate new decimal. Caller can check for NULL or MPD_Malloc_error.
- Raises on error. */
-mpd_t *
-mpd_new(mpd_context_t *ctx)
-{
- mpd_t *result;
-
- result = mpd_qnew();
- if (result == NULL) {
- mpd_addstatus_raise(ctx, MPD_Malloc_error);
- }
- return result;
-}
-
-/*
- * Input: 'result' is a static mpd_t with a static coefficient.
- * Assumption: 'nwords' >= result->alloc.
- *
- * Resize the static coefficient to a larger dynamic one and copy the
- * existing data. If successful, the value of 'result' is unchanged.
- * Otherwise, set 'result' to NaN and update 'status' with MPD_Malloc_error.
- */
-int
-mpd_switch_to_dyn(mpd_t *result, mpd_ssize_t nwords, uint32_t *status)
-{
- mpd_uint_t *p = result->data;
-
- assert(nwords >= result->alloc);
-
- result->data = mpd_alloc(nwords, sizeof *result->data);
- if (result->data == NULL) {
- result->data = p;
- mpd_set_qnan(result);
- mpd_set_positive(result);
- result->exp = result->digits = result->len = 0;
- *status |= MPD_Malloc_error;
- return 0;
- }
-
- memcpy(result->data, p, result->alloc * (sizeof *result->data));
- result->alloc = nwords;
- mpd_set_dynamic_data(result);
- return 1;
-}
-
-/*
- * Input: 'result' is a static mpd_t with a static coefficient.
- *
- * Convert the coefficient to a dynamic one that is initialized to zero. If
- * malloc fails, set 'result' to NaN and update 'status' with MPD_Malloc_error.
- */
-int
-mpd_switch_to_dyn_zero(mpd_t *result, mpd_ssize_t nwords, uint32_t *status)
-{
- mpd_uint_t *p = result->data;
-
- result->data = mpd_calloc(nwords, sizeof *result->data);
- if (result->data == NULL) {
- result->data = p;
- mpd_set_qnan(result);
- mpd_set_positive(result);
- result->exp = result->digits = result->len = 0;
- *status |= MPD_Malloc_error;
- return 0;
- }
-
- result->alloc = nwords;
- mpd_set_dynamic_data(result);
-
- return 1;
-}
-
-/*
- * Input: 'result' is a static or a dynamic mpd_t with a dynamic coefficient.
- * Resize the coefficient to length 'nwords':
- * Case nwords > result->alloc:
- * If realloc is successful:
- * 'result' has a larger coefficient but the same value. Return 1.
- * Otherwise:
- * Set 'result' to NaN, update status with MPD_Malloc_error and return 0.
- * Case nwords < result->alloc:
- * If realloc is successful:
- * 'result' has a smaller coefficient. result->len is undefined. Return 1.
- * Otherwise (unlikely):
- * 'result' is unchanged. Reuse the now oversized coefficient. Return 1.
- */
-int
-mpd_realloc_dyn(mpd_t *result, mpd_ssize_t nwords, uint32_t *status)
-{
- uint8_t err = 0;
-
- result->data = mpd_realloc(result->data, nwords, sizeof *result->data, &err);
- if (!err) {
- result->alloc = nwords;
- }
- else if (nwords > result->alloc) {
- mpd_set_qnan(result);
- mpd_set_positive(result);
- result->exp = result->digits = result->len = 0;
- *status |= MPD_Malloc_error;
- return 0;
- }
-
- return 1;
-}
-
-
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