%% options copyright owner = Dirk Krause copyright year = 2016-xxxx SPDX-License-Identifier: BSD-3-Clause %% header /** @file dk4maau16.h Operations on uint16_t data. CRT on Windows: Optional. */ #ifndef DK4CONF_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4conf.h" #else #include #endif #endif #ifndef DK4TYPES_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4types.h" #else #include #endif #endif #ifndef DK4ERROR_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4error.h" #else #include #endif #endif #if DK4_HAVE_STDLIB_H #ifndef DK4_STDLIB_H_INCLUDED #include #define DK4_STDLIB_H_INCLUDED 1 #endif #endif #if DK4_HAVE_SYS_TYPES_H #ifndef DK4_SYS_TYPES_H_INCLUDED #include #define DK4_SYS_TYPES_H_INCLUDED 1 #endif #endif #if DK4_HAVE_STDINT_H #ifndef DK4_STDINT_H_INCLUDED #include #define DK4_STDINT_H_INCLUDED 1 #endif #endif #ifndef UINT16_MAX #define UINT16_MAX ((uint16_t)65535U) #endif #ifdef __cplusplus extern "C" { #endif /** Addition of uint16_t. @param a Left operand. @param b Right operand. @param erp Error report, may be NULL. @return Operation result. Error codes: - DK4_E_INVALID_ARGUMENTS
if a or b is out of range - DK4_E_MATH_OVERFLOW
if a mathematical overfow occured. */ uint16_t dk4ma_uint16_t_add(uint16_t a, uint16_t b, dk4_er_t *erp); /** Substraction of uint16_t. @param a Left operand. @param b Right operand. @param erp Error report, may be NULL. @return Operation result. Error codes: - DK4_E_INVALID_ARGUMENTS
if a or b is out of range - DK4_E_MATH_OVERFLOW
if a mathematical overfow occured. */ uint16_t dk4ma_uint16_t_sub(uint16_t a, uint16_t b, dk4_er_t *erp); /** Multiplication of uint16_t. @param a Left operand. @param b Right operand. @param erp Error report, may be NULL. @return Operation result. Error codes: - DK4_E_INVALID_ARGUMENTS
if a or b is out of range - DK4_E_MATH_OVERFLOW
if a mathematical overfow occured. */ uint16_t dk4ma_uint16_t_mul(uint16_t a, uint16_t b, dk4_er_t *erp); /** Division of uint16_t. @param a Left operand. @param b Right operand. @param erp Error report, may be NULL. @return Operation result. Error codes: - DK4_E_INVALID_ARGUMENTS
if a or b is out of range - DK4_E_MATH_OVERFLOW
if a mathematical overfow occured, - DK4_E_MATH_DIVZERO
if b is 0. */ uint16_t dk4ma_uint16_t_div(uint16_t a, uint16_t b, dk4_er_t *erp); /** Convert dk4_um_t value to uint16_t. @param u Value to convert. @param erp Error report, may be NULL. @return Conversion result. Error codes: DK4_E_MATH_OVERFLOW. */ uint16_t dk4ma_uint16_from(dk4_um_t u, dk4_er_t *erp); /** Convert double to signed char. @param d Value to convert. @param erp Error report, may be NULL. @return Conversion result. Error codes: DK4_E_OVERFLOW. */ uint16_t dk4ma_uint16_from_double(double d, dk4_er_t *erp); #ifdef __cplusplus } #endif %% module #include "dk4conf.h" #include "dk4maau16.h" $!trace-include uint16_t dk4ma_uint16_t_add(uint16_t a, uint16_t b, dk4_er_t *erp) { if ((DK4_U16_MAX - a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return (a + b); } uint16_t dk4ma_uint16_t_sub(uint16_t a, uint16_t b, dk4_er_t *erp) { if (b > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return (a - b); } uint16_t dk4ma_uint16_t_mul(uint16_t a, uint16_t b, dk4_er_t *erp) { if ((0 < a) && (0 < b)) { if ((DK4_U16_MAX / a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } return (a * b); } uint16_t dk4ma_uint16_t_div(uint16_t a, uint16_t b, dk4_er_t *erp) { uint16_t back = 0; if (0 != b) { back = a / b; } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO); } return back; } uint16_t dk4ma_uint16_from(dk4_um_t u, dk4_er_t *erp) { if ((dk4_um_t)(DK4_U16_MAX) < u) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } return ((uint16_t)u); } uint16_t dk4ma_uint16_from_double(double d, dk4_er_t *erp) { uint16_t back = 0; if ((double)(DK4_U16_MAX) < d) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); back = DK4_U16_MAX; } else { if (0.0 > d) { dk4error_set_simple_error_code(erp,DK4_E_MATH_OVERFLOW); } else { back = (uint16_t)d; } } return back; }