/* Copyright (C) 2015-2020, Dirk Krause SPDX-License-Identifier: BSD-3-Clause */ /* WARNING: This file was generated by the dkct program (see http://dktools.sourceforge.net/ for details). Changes you make here will be lost if dkct is run again! You should modify the original source and run dkct on it. Original source: dk4maai.ctr */ /** @file dk4maai.c The dk4maai module. */ #line 132 "dk4maai.ctr" #include "dk4conf.h" #include "dk4types.h" #include "dk4error.h" #include "dk4numco.h" #include "dk4maai.h" int dk4ma_int_abs(int a, dk4_er_t *erp) { if (INT_MIN == a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return ((0 <= a) ? a : ((INT_MIN == a) ? INT_MAX : (0 - a))); } int dk4ma_int_add(int a, int b, dk4_er_t *erp) { if ((0 < a) && (0 < b)) { if ((INT_MAX - a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((0 > a) && (0 > b)) { if (INT_MIN == a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } else { if ((INT_MIN - a) > b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } } return (a + b); } int dk4ma_int_sub(int a, int b, dk4_er_t *erp) { if ((0 < a) && (0 > b)) { if ((INT_MAX + b) < a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((0 > a) && (0 < b)) { if ((INT_MIN + b) > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } return (a - b); } int dk4ma_int_mul(int a, int b, dk4_er_t *erp) { if ((0 != a) && (0 != b)) { if (INT_MIN == a) { if (1 != b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if (INT_MIN == b) { if (1 != a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if (0 < a) { if (0 < b) { if ((INT_MAX / a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((INT_MIN / a) > b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } else { if (0 < b) { if ((INT_MIN / b) > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((INT_MAX / (0 - a)) < (0 - b)) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } } } } return (a * b); } int dk4ma_int_div(int a, int b, dk4_er_t *erp) { int back = 0; if (0 != b) { if ((INT_MIN == a) && (-1 == b)) { back = INT_MAX; dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } else { back = a / b; } } else { if (0 < a) { back = INT_MAX; } else { if (0 > a) { back = INT_MIN; } } dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO); } return back; } int dk4ma_int_from(dk4_im_t i, dk4_er_t *erp) { if (((dk4_im_t)(INT_MAX) < i) || ((dk4_im_t)(INT_MIN) > i)) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return ((int)i); } int dk4ma_int_from_double(double d, dk4_er_t *erp) { int back = 0; if ((double)(INT_MIN) > d) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); back = INT_MIN; } else { if ((double)(INT_MAX) < d) { dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW); back = INT_MAX; } else { back = (int)d; } } return back; }