%% options copyright owner = Dirk Krause copyright year = 2016-xxxx license = bsd %% header /** @file dk4maai32.h Operations on int32_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 int32_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. */ int32_t dk4ma_int32_t_add(int32_t a, int32_t b, dk4_er_t *erp); /** Substraction of int32_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. */ int32_t dk4ma_int32_t_sub(int32_t a, int32_t b, dk4_er_t *erp); /** Multiplication of int32_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. */ int32_t dk4ma_int32_t_mul(int32_t a, int32_t b, dk4_er_t *erp); /** Division of int32_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. */ int32_t dk4ma_int32_t_div(int32_t a, int32_t b, dk4_er_t *erp); /** Absolute value. @param a Argument. @param erp Error report, may be NULL. @return Absolute value of a. Error codes: - DK4_E_INVALID_ARGUMENTS
if a or b is out of range - DK4_E_MATH_OVERFLOW
if a mathematical overfow occured. */ int32_t dk4ma_int32_t_abs(int32_t a, dk4_er_t *erp); #ifdef __cplusplus } #endif %% module #include "dk4maai32.h" $!trace-include int32_t dk4ma_int32_t_add(int32_t a, int32_t b, dk4_er_t *erp) { if ((DK4_I32_MAX < a) || (DK4_I32_MIN > a)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((DK4_I32_MAX < b) || (DK4_I32_MIN > b)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((0L < a) && (0L < b)) { if ((DK4_I32_MAX - a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((0L > a) && (0L > b)) { if (DK4_I32_MIN == a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } else { if ((DK4_I32_MIN - a) > b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } } finished: return (a + b); } int32_t dk4ma_int32_t_sub(int32_t a, int32_t b, dk4_er_t *erp) { if ((DK4_I32_MAX < a) || (DK4_I32_MIN > a)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((DK4_I32_MAX < b) || (DK4_I32_MIN > b)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((0L < a) && (0L > b)) { if ((DK4_I32_MAX + b) < a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((0L > a) && (0L < b)) { if ((DK4_I32_MIN + b) > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } finished: return (a - b); } int32_t dk4ma_int32_t_mul(int32_t a, int32_t b, dk4_er_t *erp) { if ((DK4_I32_MAX < a) || (DK4_I32_MIN > a)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((DK4_I32_MAX < b) || (DK4_I32_MIN > b)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((0L != a) && (0L != b)) { if (DK4_I32_MIN == b) { if (1L != a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if (DK4_I32_MIN == a) { if (1L != b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if (0L < a) { if (0L < b) { if ((DK4_I32_MAX / a) < b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((DK4_I32_MIN / a) > b) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } else { if (0L < b) { if ((DK4_I32_MIN / b) > a) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } else { if ((DK4_I32_MAX / (0L - a)) < (0L - b)) { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } } } } } } finished: return (a * b); } int32_t dk4ma_int32_t_div(int32_t a, int32_t b, dk4_er_t *erp) { int32_t back = 0L; if ((DK4_I32_MAX < a) || (DK4_I32_MIN > a)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } if ((DK4_I32_MAX < b) || (DK4_I32_MIN > b)) { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); goto finished; } finished: if (0L != b) { if ((DK4_I32_MIN == a) && (-1L == b)) { back = DK4_I32_MAX; dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); } else { back = a / b; } } else { if (0L < a) { back = DK4_I32_MAX; } else { if (0L > a) { back = DK4_I32_MIN; } } dk4error_set_simple_error_code(erp, DK4_E_MATH_DIVZERO); } return back; } int32_t dk4ma_int32_t_abs(int32_t a, dk4_er_t *erp) { if (DK4_I32_MIN != a) { return (0L - a); } else { dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW); return (DK4_I32_MAX); } }