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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Josef Gajdusek
* Copyright (c) 2015 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
mp_obj_t mp_call_function_1_protected(mp_obj_t fun, mp_obj_t arg) {
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t ret = mp_call_function_1(fun, arg);
nlr_pop();
return ret;
} else {
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
return MP_OBJ_NULL;
}
}
mp_obj_t mp_call_function_2_protected(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2) {
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_obj_t ret = mp_call_function_2(fun, arg1, arg2);
nlr_pop();
return ret;
} else {
mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
return MP_OBJ_NULL;
}
}
#if !MICROPY_USE_GCC_MUL_OVERFLOW_INTRINSIC
bool mp_mul_ll_overflow(long long int x, long long int y, long long int *res) {
bool overflow;
// Check for multiply overflow; see CERT INT32-C
if (x > 0) { // x is positive
if (y > 0) { // x and y are positive
overflow = (x > (LLONG_MAX / y));
} else { // x positive, y nonpositive
overflow = (y < (LLONG_MIN / x));
} // x positive, y nonpositive
} else { // x is nonpositive
if (y > 0) { // x is nonpositive, y is positive
overflow = (x < (LLONG_MIN / y));
} else { // x and y are nonpositive
overflow = (x != 0 && y < (LLONG_MAX / x));
} // End if x and y are nonpositive
} // End if x is nonpositive
if (!overflow) {
*res = x * y;
}
return overflow;
}
#define MP_UINT_MAX (~(mp_uint_t)0)
#define MP_INT_MAX ((mp_int_t)(MP_UINT_MAX >> 1))
#define MP_INT_MIN (-MP_INT_MAX - 1)
bool mp_mul_mp_int_t_overflow(mp_int_t x, mp_int_t y, mp_int_t *res) {
// Check for multiply overflow; see CERT INT32-C
if (x > 0) { // x is positive
if (y > 0) { // x and y are positive
if (x > (MP_INT_MAX / y)) {
return true;
}
} else { // x positive, y nonpositive
if (y < (MP_INT_MIN / x)) {
return true;
}
} // x positive, y nonpositive
} else { // x is nonpositive
if (y > 0) { // x is nonpositive, y is positive
if (x < (MP_INT_MIN / y)) {
return true;
}
} else { // x and y are nonpositive
if (x != 0 && y < (MP_INT_MAX / x)) {
return true;
}
} // End if x and y are nonpositive
} // End if x is nonpositive
// Result doesn't overflow
*res = x * y;
return false;
}
#endif
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