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-rw-r--r--ports/nrf/modules/random/modrandom.c177
1 files changed, 0 insertions, 177 deletions
diff --git a/ports/nrf/modules/random/modrandom.c b/ports/nrf/modules/random/modrandom.c
deleted file mode 100644
index 0e140750d..000000000
--- a/ports/nrf/modules/random/modrandom.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2016 Paul Sokolovsky
- * Copyright (c) 2016 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include <assert.h>
-#include <string.h>
-
-#include "py/runtime.h"
-#include "hal_rng.h"
-
-#if MICROPY_PY_HW_RNG
-
-static inline int rand30() {
- uint32_t val = hal_rng_generate();
- return (val & 0x3fffffff); // binary mask b00111111111111111111111111111111
-}
-
-static inline int randbelow(int n) {
- return rand30() % n;
-}
-
-STATIC mp_obj_t mod_random_getrandbits(mp_obj_t num_in) {
- int n = mp_obj_get_int(num_in);
- if (n > 30 || n == 0) {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
- uint32_t mask = ~0;
- // Beware of C undefined behavior when shifting by >= than bit size
- mask >>= (32 - n);
- return mp_obj_new_int_from_uint(rand30() & mask);
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_random_getrandbits_obj, mod_random_getrandbits);
-
-STATIC mp_obj_t mod_random_randrange(size_t n_args, const mp_obj_t *args) {
- mp_int_t start = mp_obj_get_int(args[0]);
- if (n_args == 1) {
- // range(stop)
- if (start > 0) {
- return mp_obj_new_int(randbelow(start));
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
- } else {
- mp_int_t stop = mp_obj_get_int(args[1]);
- if (n_args == 2) {
- // range(start, stop)
- if (start < stop) {
- return mp_obj_new_int(start + randbelow(stop - start));
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
- } else {
- // range(start, stop, step)
- mp_int_t step = mp_obj_get_int(args[2]);
- mp_int_t n;
- if (step > 0) {
- n = (stop - start + step - 1) / step;
- } else if (step < 0) {
- n = (stop - start + step + 1) / step;
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
- if (n > 0) {
- return mp_obj_new_int(start + step * randbelow(n));
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
- }
- }
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_random_randrange_obj, 1, 3, mod_random_randrange);
-
-STATIC mp_obj_t mod_random_randint(mp_obj_t a_in, mp_obj_t b_in) {
- mp_int_t a = mp_obj_get_int(a_in);
- mp_int_t b = mp_obj_get_int(b_in);
- if (a <= b) {
- return mp_obj_new_int(a + randbelow(b - a + 1));
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_ValueError));
- }
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_random_randint_obj, mod_random_randint);
-
-STATIC mp_obj_t mod_random_choice(mp_obj_t seq) {
- mp_int_t len = mp_obj_get_int(mp_obj_len(seq));
- if (len > 0) {
- return mp_obj_subscr(seq, mp_obj_new_int(randbelow(len)), MP_OBJ_SENTINEL);
- } else {
- nlr_raise(mp_obj_new_exception(&mp_type_IndexError));
- }
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_random_choice_obj, mod_random_choice);
-
-#if MICROPY_PY_BUILTINS_FLOAT
-
-// returns a number in the range [0..1) using RNG to fill in the fraction bits
-STATIC mp_float_t randfloat(void) {
- #if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_DOUBLE
- typedef uint64_t mp_float_int_t;
- #elif MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
- typedef uint32_t mp_float_int_t;
- #endif
- union {
- mp_float_t f;
- #if MP_ENDIANNESS_LITTLE
- struct { mp_float_int_t frc:MP_FLOAT_FRAC_BITS, exp:MP_FLOAT_EXP_BITS, sgn:1; } p;
- #else
- struct { mp_float_int_t sgn:1, exp:MP_FLOAT_EXP_BITS, frc:MP_FLOAT_FRAC_BITS; } p;
- #endif
- } u;
- u.p.sgn = 0;
- u.p.exp = (1 << (MP_FLOAT_EXP_BITS - 1)) - 1;
- if (MP_FLOAT_FRAC_BITS <= 30) {
- u.p.frc = rand30();
- } else {
- u.p.frc = ((uint64_t)rand30() << 30) | (uint64_t)rand30();
- }
- return u.f - 1;
-}
-
-STATIC mp_obj_t mod_random_random(void) {
- return mp_obj_new_float(randfloat());
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_random_random_obj, mod_random_random);
-
-STATIC mp_obj_t mod_random_uniform(mp_obj_t a_in, mp_obj_t b_in) {
- mp_float_t a = mp_obj_get_float(a_in);
- mp_float_t b = mp_obj_get_float(b_in);
- return mp_obj_new_float(a + (b - a) * randfloat());
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_random_uniform_obj, mod_random_uniform);
-
-#endif
-
-STATIC const mp_rom_map_elem_t mp_module_random_globals_table[] = {
- { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_random) },
- { MP_ROM_QSTR(MP_QSTR_getrandbits), MP_ROM_PTR(&mod_random_getrandbits_obj) },
- { MP_ROM_QSTR(MP_QSTR_randrange), MP_ROM_PTR(&mod_random_randrange_obj) },
- { MP_ROM_QSTR(MP_QSTR_randint), MP_ROM_PTR(&mod_random_randint_obj) },
- { MP_ROM_QSTR(MP_QSTR_choice), MP_ROM_PTR(&mod_random_choice_obj) },
-#if MICROPY_PY_BUILTINS_FLOAT
- { MP_ROM_QSTR(MP_QSTR_random), MP_ROM_PTR(&mod_random_random_obj) },
- { MP_ROM_QSTR(MP_QSTR_uniform), MP_ROM_PTR(&mod_random_uniform_obj) },
-#endif
-};
-
-STATIC MP_DEFINE_CONST_DICT(mp_module_random_globals, mp_module_random_globals_table);
-
-const mp_obj_module_t random_module = {
- .base = { &mp_type_module },
- .globals = (mp_obj_dict_t*)&mp_module_random_globals,
-};
-
-#endif // MICROPY_PY_HW_RNG
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