mirror of https://github.com/rene-dev/stmbl.git
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
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* This file is part of the stmbl project.
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*
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* Copyright (C) 2013-2015 Rene Hopf <renehopf@mac.com>
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* Copyright (C) 2013-2015 Nico Stute <crinq@crinq.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <math.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define NO 0
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#define YES 1
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#define ABS(a) (((a) < 0.0) ? -(a) : (a))
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#define LIMIT(x, lowhigh) (((x) > (lowhigh)) ? (lowhigh) : (((x) < (-lowhigh)) ? (-lowhigh) : (x)))
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#define SAT(x, lowhigh) (((x) > (lowhigh)) ? (1.0) : (((x) < (-lowhigh)) ? (-1.0) : (0.0)))
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#define SAT2(x, low, high) (((x) > (high)) ? (1.0) : (((x) < (low)) ? (-1.0) : (0.0)))
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#define STEP(from, to, step) (((from) < (to)) ? (MIN((from) + (step), (to))) : (MAX((from) - (step), (to))))
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#define DEG(a) ((a) * M_PI / 180.0)
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#define RAD(a) ((a) * 180.0 / M_PI)
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#define SIGN(a) (((a) < 0.0) ? (-1.0) : (((a) > 0.0) ? (1.0) : (0.0)))
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#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
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#define SCALE(value, high, max) MIN(MAX(((max) - (value)) / ((max) - (high)), 0.0), 1.0)
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#define MAX(a, b) (((a) > (b)) ? (a) : (b))
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
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#define STATIC_ASSERT(x) _Static_assert(x, #x)
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#define STRINGIFY_(x) #x
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#define STRINGIFY(x) STRINGIFY_(x)
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//TODO: change type to typeof()
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//TODO: change __old_val__ to something more useful
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#define RISING_EDGE(sig)\
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({static float __old_val__ = 0.0; uint8_t ret = (sig) > __old_val__; __old_val__ = (sig); ret;})
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#define FALLING_EDGE(sig)\
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({static float __old_val__ = 0.0; uint8_t ret = (sig) < __old_val__; __old_val__ = (sig); ret;})
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#define EDGE(sig)\
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({static float __old_val__ = 0.0; uint8_t ret = (sig) != __old_val__; __old_val__ = (sig); ret;})
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//TODO: 5000 are fixed!
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#define LP_HZ(a) (((a) <= 0.0) ? (1.0) : (1.0 / (5000.0 / ((a) * M_PI * 2.0) + 1.0)))
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#ifdef __cplusplus
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}
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#endif
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