/* 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: dk4maauc.ctr */ /** @file dk4maauc.c The dk4maauc module. */ #line 122 "dk4maauc.ctr" #include "dk4conf.h" #include "dk4types.h" #include "dk4error.h" #include "dk4numco.h" #include "dk4maauc.h" unsigned char dk4ma_uchar_add(unsigned char a, unsigned char b, dk4_er_t *erp) { if ((UCHAR_MAX - a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return (unsigned char)(a + b); } unsigned char dk4ma_uchar_sub(unsigned char a, unsigned char b, dk4_er_t *erp) { if (b > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return (unsigned char)(a - b); } unsigned char dk4ma_uchar_mul(unsigned char a, unsigned char b, dk4_er_t *erp) { if (0 < a) { if ((UCHAR_MAX / a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } return (unsigned char)(a * b); } unsigned char dk4ma_uchar_div(unsigned char a, unsigned char b, dk4_er_t *erp) { if (0 < b) { return (unsigned char)(a / b); } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO); return (unsigned char)(UCHAR_MAX); } } unsigned char dk4ma_uchar_from(dk4_um_t u, dk4_er_t *erp) { if ((dk4_um_t)(UCHAR_MAX) < u) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return ((unsigned char)u); } unsigned char dk4ma_uchar_from_double(double d, dk4_er_t *erp) { unsigned char back = 0; if ((double)(UCHAR_MAX) < d) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); back = UCHAR_MAX; } else { if (0.0 > d) { dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW); } else { back = (unsigned char)d; } } return back; }