%% options copyright owner = Dirk Krause copyright year = 2016-xxxx license = bsd %% header /** @file dk4maau32.h Operations on uint32_t data. */ #ifndef DK4CONF_H_INCLUDED #include "dk4conf.h" #endif #ifndef DK4TYPES_H_INCLUDED #include "dk4types.h" #endif #ifndef DK4ERROR_H_INCLUDED #include "dk4error.h" #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 #ifdef __cplusplus extern "C" { #endif /** Addition of uint32_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. */ uint32_t dk4ma_uint32_t_add(uint32_t a, uint32_t b, dk4_er_t *erp); /** Substraction of uint32_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. */ uint32_t dk4ma_uint32_t_sub(uint32_t a, uint32_t b, dk4_er_t *erp); /** Multiplication of uint32_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. */ uint32_t dk4ma_uint32_t_mul(uint32_t a, uint32_t b, dk4_er_t *erp); /** Division of uint32_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. */ uint32_t dk4ma_uint32_t_div(uint32_t a, uint32_t b, dk4_er_t *erp); #ifdef __cplusplus } #endif %% module #include "dk4maau32.h" $!trace-include uint32_t dk4ma_uint32_t_add(uint32_t a, uint32_t b, dk4_er_t *erp) { if (DK4_U32_MAX < a) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if (DK4_U32_MAX < b) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((DK4_U32_MAX - a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } finished: return (a + b); } uint32_t dk4ma_uint32_t_sub(uint32_t a, uint32_t b, dk4_er_t *erp) { if (DK4_U32_MAX < a) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if (DK4_U32_MAX < b) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if (b > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } finished: return (a - b); } uint32_t dk4ma_uint32_t_mul(uint32_t a, uint32_t b, dk4_er_t *erp) { if (DK4_U32_MAX < a) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if (DK4_U32_MAX < b) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((0L < a) && (0L < b)) { if ((DK4_U32_MAX / a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } finished: return (a * b); } uint32_t dk4ma_uint32_t_div(uint32_t a, uint32_t b, dk4_er_t *erp) { uint32_t back = 0; if (DK4_U32_MAX < a) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if (DK4_U32_MAX < b) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } finished: if (0L != b) { back = a / b; } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO); } return back; }