a0058e6712
also initializes in the same way where it takes from a true random source when available through os.urandom(). After initializing, it produces deterministic results until the seed is set. This replaces urandom! Fixes #139.
41 lines
1.9 KiB
C
41 lines
1.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __MICROPY_INCLUDED_SHARED_BINDINGS_RANDOM___INIT___H__
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#define __MICROPY_INCLUDED_SHARED_BINDINGS_RANDOM___INIT___H__
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// This depends on shared_module because nearly all functionality is port
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// agnostic. The random module only depends on the common_hal_os_urandom or
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// common_hal_time_monotonic to seed it initially.
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void shared_modules_random_seed(mp_uint_t seed);
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mp_uint_t shared_modules_random_getrandbits(uint8_t n);
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mp_int_t shared_modules_random_randrange(mp_int_t start, mp_int_t stop, mp_int_t step);
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mp_float_t shared_modules_random_random(void);
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mp_float_t shared_modules_random_uniform(mp_float_t a, mp_float_t b);
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#endif // __MICROPY_INCLUDED_SHARED_BINDINGS_RANDOM___INIT___H__
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