2014-05-03 23:27:38 +01:00
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/*
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* This file is part of the Micro Python 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) 2013, 2014 Damien P. George
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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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2015-01-01 20:27:54 +00:00
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#include "py/builtin.h"
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2015-12-10 12:28:37 +00:00
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#include "py/nlr.h"
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2014-03-08 15:24:39 +00:00
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2014-06-01 13:32:54 +01:00
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#if MICROPY_PY_BUILTINS_FLOAT && MICROPY_PY_MATH
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2014-03-08 15:24:39 +00:00
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2015-01-01 20:27:54 +00:00
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#include <math.h>
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2016-05-09 22:11:34 +01:00
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// M_PI is not part of the math.h standard and may not be defined
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2016-11-03 01:33:01 +00:00
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// And by defining our own we can ensure it uses the correct const format.
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#define MP_PI MICROPY_FLOAT_CONST(3.14159265358979323846)
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2016-05-09 22:11:34 +01:00
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2014-08-10 17:50:28 +01:00
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/// \module math - mathematical functions
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///
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/// The `math` module provides some basic mathematical funtions for
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/// working with floating-point numbers.
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2015-12-10 12:28:37 +00:00
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STATIC NORETURN void math_error(void) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "math domain error"));
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}
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2014-03-08 15:24:39 +00:00
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#define MATH_FUN_1(py_name, c_name) \
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_ ## py_name(mp_obj_t x_obj) { return mp_obj_new_float(MICROPY_FLOAT_C_FUN(c_name)(mp_obj_get_float(x_obj))); } \
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2014-03-08 15:24:39 +00:00
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_## py_name ## _obj, mp_math_ ## py_name);
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#define MATH_FUN_2(py_name, c_name) \
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_ ## py_name(mp_obj_t x_obj, mp_obj_t y_obj) { return mp_obj_new_float(MICROPY_FLOAT_C_FUN(c_name)(mp_obj_get_float(x_obj), mp_obj_get_float(y_obj))); } \
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2014-03-08 15:24:39 +00:00
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(mp_math_## py_name ## _obj, mp_math_ ## py_name);
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2014-04-01 21:21:50 +01:00
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#define MATH_FUN_1_TO_BOOL(py_name, c_name) \
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2015-10-11 10:09:43 +01:00
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STATIC mp_obj_t mp_math_ ## py_name(mp_obj_t x_obj) { return mp_obj_new_bool(c_name(mp_obj_get_float(x_obj))); } \
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2014-03-22 14:39:33 +00:00
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_## py_name ## _obj, mp_math_ ## py_name);
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2014-04-01 21:21:50 +01:00
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#define MATH_FUN_1_TO_INT(py_name, c_name) \
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_ ## py_name(mp_obj_t x_obj) { mp_int_t x = MICROPY_FLOAT_C_FUN(c_name)(mp_obj_get_float(x_obj)); return mp_obj_new_int(x); } \
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2014-04-01 21:21:50 +01:00
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_## py_name ## _obj, mp_math_ ## py_name);
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2015-12-10 12:28:37 +00:00
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#define MATH_FUN_1_ERRCOND(py_name, c_name, error_condition) \
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STATIC mp_obj_t mp_math_ ## py_name(mp_obj_t x_obj) { \
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mp_float_t x = mp_obj_get_float(x_obj); \
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if (error_condition) { \
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math_error(); \
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} \
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return mp_obj_new_float(MICROPY_FLOAT_C_FUN(c_name)(x)); \
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} \
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_## py_name ## _obj, mp_math_ ## py_name);
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2015-11-13 11:24:39 +00:00
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#if MP_NEED_LOG2
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// 1.442695040888963407354163704 is 1/_M_LN2
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#define log2(x) (log(x) * 1.442695040888963407354163704)
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#endif
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2014-08-10 17:50:28 +01:00
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/// \function sqrt(x)
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/// Returns the square root of `x`.
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2015-12-10 12:28:37 +00:00
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MATH_FUN_1_ERRCOND(sqrt, sqrt, (x < (mp_float_t)0.0))
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2014-08-10 17:50:28 +01:00
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/// \function pow(x, y)
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/// Returns `x` to the power of `y`.
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2014-03-08 15:24:39 +00:00
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MATH_FUN_2(pow, pow)
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2014-08-10 17:50:28 +01:00
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/// \function exp(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(exp, exp)
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2015-11-13 22:46:12 +00:00
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#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
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2014-08-10 17:50:28 +01:00
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/// \function expm1(x)
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2014-03-12 21:31:41 +00:00
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MATH_FUN_1(expm1, expm1)
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2014-08-10 17:50:28 +01:00
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/// \function log2(x)
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2015-12-10 12:28:37 +00:00
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MATH_FUN_1_ERRCOND(log2, log2, (x <= (mp_float_t)0.0))
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2014-08-10 17:50:28 +01:00
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/// \function log10(x)
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2015-12-10 12:28:37 +00:00
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MATH_FUN_1_ERRCOND(log10, log10, (x <= (mp_float_t)0.0))
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2014-08-10 17:50:28 +01:00
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/// \function cosh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(cosh, cosh)
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2014-08-10 17:50:28 +01:00
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/// \function sinh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(sinh, sinh)
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2014-08-10 17:50:28 +01:00
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/// \function tanh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(tanh, tanh)
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2014-08-10 17:50:28 +01:00
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/// \function acosh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(acosh, acosh)
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2014-08-10 17:50:28 +01:00
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/// \function asinh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(asinh, asinh)
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2014-08-10 17:50:28 +01:00
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/// \function atanh(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(atanh, atanh)
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2015-11-17 14:10:13 +00:00
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#endif
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2014-08-10 17:50:28 +01:00
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/// \function cos(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(cos, cos)
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2014-08-10 17:50:28 +01:00
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/// \function sin(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(sin, sin)
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2014-08-10 17:50:28 +01:00
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/// \function tan(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(tan, tan)
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2014-08-10 17:50:28 +01:00
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/// \function acos(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(acos, acos)
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2014-08-10 17:50:28 +01:00
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/// \function asin(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(asin, asin)
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2014-08-10 17:50:28 +01:00
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/// \function atan(x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_1(atan, atan)
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2014-08-10 17:50:28 +01:00
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/// \function atan2(y, x)
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2014-03-08 15:24:39 +00:00
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MATH_FUN_2(atan2, atan2)
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2014-08-10 17:50:28 +01:00
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/// \function ceil(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_INT(ceil, ceil)
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2014-08-10 17:50:28 +01:00
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/// \function copysign(x, y)
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2014-03-20 21:26:51 +00:00
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MATH_FUN_2(copysign, copysign)
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2014-08-10 17:50:28 +01:00
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/// \function fabs(x)
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2014-03-20 21:26:51 +00:00
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MATH_FUN_1(fabs, fabs)
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2014-08-10 17:50:28 +01:00
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/// \function floor(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_INT(floor, floor) //TODO: delegate to x.__floor__() if x is not a float
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2014-08-10 17:50:28 +01:00
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/// \function fmod(x, y)
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2014-03-20 21:26:51 +00:00
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MATH_FUN_2(fmod, fmod)
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2014-08-10 17:50:28 +01:00
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/// \function isfinite(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_BOOL(isfinite, isfinite)
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2014-08-10 17:50:28 +01:00
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/// \function isinf(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_BOOL(isinf, isinf)
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2014-08-10 17:50:28 +01:00
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/// \function isnan(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_BOOL(isnan, isnan)
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2014-08-10 17:50:28 +01:00
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/// \function trunc(x)
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2014-04-01 21:21:50 +01:00
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MATH_FUN_1_TO_INT(trunc, trunc)
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2014-08-10 17:50:28 +01:00
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/// \function ldexp(x, exp)
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2014-03-22 14:39:33 +00:00
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MATH_FUN_2(ldexp, ldexp)
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2015-02-22 14:48:18 +00:00
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#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
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2014-08-10 17:50:28 +01:00
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/// \function erf(x)
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/// Return the error function of `x`.
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2014-03-22 14:39:33 +00:00
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MATH_FUN_1(erf, erf)
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2014-08-10 17:50:28 +01:00
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/// \function erfc(x)
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/// Return the complementary error function of `x`.
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2014-03-22 14:39:33 +00:00
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MATH_FUN_1(erfc, erfc)
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2014-08-10 17:50:28 +01:00
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/// \function gamma(x)
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/// Return the gamma function of `x`.
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2014-03-23 09:46:10 +00:00
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MATH_FUN_1(gamma, tgamma)
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2014-08-10 17:50:28 +01:00
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/// \function lgamma(x)
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/// return the natural logarithm of the gamma function of `x`.
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2014-03-22 14:39:33 +00:00
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MATH_FUN_1(lgamma, lgamma)
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2015-02-22 14:48:18 +00:00
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#endif
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2014-03-22 14:39:33 +00:00
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//TODO: factorial, fsum
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2015-06-13 21:56:23 +01:00
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// Function that takes a variable number of arguments
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// log(x[, base])
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2016-01-03 14:21:40 +00:00
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STATIC mp_obj_t mp_math_log(size_t n_args, const mp_obj_t *args) {
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2015-12-10 12:28:37 +00:00
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mp_float_t x = mp_obj_get_float(args[0]);
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if (x <= (mp_float_t)0.0) {
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math_error();
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}
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mp_float_t l = MICROPY_FLOAT_C_FUN(log)(x);
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2015-06-13 21:56:23 +01:00
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if (n_args == 1) {
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return mp_obj_new_float(l);
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} else {
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2015-12-10 12:28:37 +00:00
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mp_float_t base = mp_obj_get_float(args[1]);
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if (base <= (mp_float_t)0.0) {
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math_error();
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}
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return mp_obj_new_float(l / MICROPY_FLOAT_C_FUN(log)(base));
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2015-06-13 21:56:23 +01:00
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_math_log_obj, 1, 2, mp_math_log);
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2014-03-22 14:39:33 +00:00
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// Functions that return a tuple
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2014-08-10 17:50:28 +01:00
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/// \function frexp(x)
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/// Converts a floating-point number to fractional and integral components.
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_frexp(mp_obj_t x_obj) {
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2014-03-22 20:44:15 +00:00
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int int_exponent = 0;
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mp_float_t significand = MICROPY_FLOAT_C_FUN(frexp)(mp_obj_get_float(x_obj), &int_exponent);
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mp_obj_t tuple[2];
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tuple[0] = mp_obj_new_float(significand);
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tuple[1] = mp_obj_new_int(int_exponent);
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return mp_obj_new_tuple(2, tuple);
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2014-03-22 14:39:33 +00:00
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_frexp_obj, mp_math_frexp);
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2014-08-10 17:50:28 +01:00
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/// \function modf(x)
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_modf(mp_obj_t x_obj) {
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2014-03-22 20:44:15 +00:00
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mp_float_t int_part = 0.0;
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mp_float_t fractional_part = MICROPY_FLOAT_C_FUN(modf)(mp_obj_get_float(x_obj), &int_part);
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mp_obj_t tuple[2];
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tuple[0] = mp_obj_new_float(fractional_part);
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tuple[1] = mp_obj_new_float(int_part);
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return mp_obj_new_tuple(2, tuple);
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2014-03-22 14:39:33 +00:00
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_modf_obj, mp_math_modf);
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// Angular conversions
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2014-08-10 17:50:28 +01:00
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/// \function radians(x)
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_radians(mp_obj_t x_obj) {
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2016-11-03 01:33:01 +00:00
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return mp_obj_new_float(mp_obj_get_float(x_obj) * (MP_PI / MICROPY_FLOAT_CONST(180.0)));
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2014-03-22 14:39:33 +00:00
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_radians_obj, mp_math_radians);
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2014-08-10 17:50:28 +01:00
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/// \function degrees(x)
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2014-12-10 22:07:04 +00:00
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STATIC mp_obj_t mp_math_degrees(mp_obj_t x_obj) {
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2016-11-03 01:33:01 +00:00
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return mp_obj_new_float(mp_obj_get_float(x_obj) * (MICROPY_FLOAT_CONST(180.0) / MP_PI));
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2014-03-22 14:39:33 +00:00
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_math_degrees_obj, mp_math_degrees);
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2014-03-20 21:30:38 +00:00
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2015-11-27 13:38:15 +00:00
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STATIC const mp_rom_map_elem_t mp_module_math_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_math) },
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{ MP_ROM_QSTR(MP_QSTR_e), mp_const_float_e },
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{ MP_ROM_QSTR(MP_QSTR_pi), mp_const_float_pi },
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{ MP_ROM_QSTR(MP_QSTR_sqrt), MP_ROM_PTR(&mp_math_sqrt_obj) },
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{ MP_ROM_QSTR(MP_QSTR_pow), MP_ROM_PTR(&mp_math_pow_obj) },
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{ MP_ROM_QSTR(MP_QSTR_exp), MP_ROM_PTR(&mp_math_exp_obj) },
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2015-11-13 22:55:54 +00:00
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#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
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2015-11-27 13:38:15 +00:00
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{ MP_ROM_QSTR(MP_QSTR_expm1), MP_ROM_PTR(&mp_math_expm1_obj) },
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2015-11-13 22:55:54 +00:00
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#endif
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2015-11-27 13:38:15 +00:00
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{ MP_ROM_QSTR(MP_QSTR_log), MP_ROM_PTR(&mp_math_log_obj) },
|
2015-11-17 14:10:13 +00:00
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|
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#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
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2015-11-27 13:38:15 +00:00
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{ MP_ROM_QSTR(MP_QSTR_log2), MP_ROM_PTR(&mp_math_log2_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_log10), MP_ROM_PTR(&mp_math_log10_obj) },
|
|
|
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{ MP_ROM_QSTR(MP_QSTR_cosh), MP_ROM_PTR(&mp_math_cosh_obj) },
|
|
|
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{ MP_ROM_QSTR(MP_QSTR_sinh), MP_ROM_PTR(&mp_math_sinh_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_tanh), MP_ROM_PTR(&mp_math_tanh_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_acosh), MP_ROM_PTR(&mp_math_acosh_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_asinh), MP_ROM_PTR(&mp_math_asinh_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_atanh), MP_ROM_PTR(&mp_math_atanh_obj) },
|
2015-11-17 14:10:13 +00:00
|
|
|
#endif
|
2015-11-27 13:38:15 +00:00
|
|
|
{ MP_ROM_QSTR(MP_QSTR_cos), MP_ROM_PTR(&mp_math_cos_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_sin), MP_ROM_PTR(&mp_math_sin_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_tan), MP_ROM_PTR(&mp_math_tan_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_acos), MP_ROM_PTR(&mp_math_acos_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_asin), MP_ROM_PTR(&mp_math_asin_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_atan), MP_ROM_PTR(&mp_math_atan_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_atan2), MP_ROM_PTR(&mp_math_atan2_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_ceil), MP_ROM_PTR(&mp_math_ceil_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_copysign), MP_ROM_PTR(&mp_math_copysign_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_fabs), MP_ROM_PTR(&mp_math_fabs_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_floor), MP_ROM_PTR(&mp_math_floor_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_fmod), MP_ROM_PTR(&mp_math_fmod_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_frexp), MP_ROM_PTR(&mp_math_frexp_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_ldexp), MP_ROM_PTR(&mp_math_ldexp_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_modf), MP_ROM_PTR(&mp_math_modf_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_isfinite), MP_ROM_PTR(&mp_math_isfinite_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_isinf), MP_ROM_PTR(&mp_math_isinf_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_isnan), MP_ROM_PTR(&mp_math_isnan_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_trunc), MP_ROM_PTR(&mp_math_trunc_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_radians), MP_ROM_PTR(&mp_math_radians_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_degrees), MP_ROM_PTR(&mp_math_degrees_obj) },
|
2015-02-22 14:48:18 +00:00
|
|
|
#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
|
2015-11-27 13:38:15 +00:00
|
|
|
{ MP_ROM_QSTR(MP_QSTR_erf), MP_ROM_PTR(&mp_math_erf_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_erfc), MP_ROM_PTR(&mp_math_erfc_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_gamma), MP_ROM_PTR(&mp_math_gamma_obj) },
|
|
|
|
{ MP_ROM_QSTR(MP_QSTR_lgamma), MP_ROM_PTR(&mp_math_lgamma_obj) },
|
2015-02-22 14:48:18 +00:00
|
|
|
#endif
|
2014-03-08 15:24:39 +00:00
|
|
|
};
|
|
|
|
|
2014-11-29 14:39:27 +00:00
|
|
|
STATIC MP_DEFINE_CONST_DICT(mp_module_math_globals, mp_module_math_globals_table);
|
2014-03-08 15:24:39 +00:00
|
|
|
|
|
|
|
const mp_obj_module_t mp_module_math = {
|
|
|
|
.base = { &mp_type_module },
|
2014-04-05 21:53:54 +01:00
|
|
|
.globals = (mp_obj_dict_t*)&mp_module_math_globals,
|
2014-03-08 15:24:39 +00:00
|
|
|
};
|
|
|
|
|
2014-06-01 13:32:54 +01:00
|
|
|
#endif // MICROPY_PY_BUILTINS_FLOAT && MICROPY_PY_MATH
|