65 lines
2 KiB
C
65 lines
2 KiB
C
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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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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*/
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#ifndef MACROS_H
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#define MACROS_H
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// Macros to make a string from a macro
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#define STRINGIFY_(M) #M
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#define STRINGIFY(M) STRINGIFY_(M)
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// Macros for bit masks
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#define TEST(n,b) (((n)&_BV(b))!=0)
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#define SBI(n,b) (n |= _BV(b))
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#define CBI(n,b) (n &= ~_BV(b))
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#define SET_BIT(n,b,value) (n) ^= ((-value)^(n)) & (_BV(b))
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// Macros for maths shortcuts
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#define RADIANS(d) ((d)*M_PI/180.0)
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#define DEGREES(r) ((r)*180.0/M_PI)
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// Macros to contrain values
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#define NOLESS(v,n) do{ if (v < n) v = n; }while(0)
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#define NOMORE(v,n) do{ if (v > n) v = n; }while(0)
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// Macros to support option testing
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#define _CAT(a, ...) a ## __VA_ARGS__
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#define SWITCH_ENABLED_false 0
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#define SWITCH_ENABLED_true 1
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#define SWITCH_ENABLED_0 0
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#define SWITCH_ENABLED_1 1
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#define SWITCH_ENABLED_ 1
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#define ENABLED(b) _CAT(SWITCH_ENABLED_, b)
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#define DISABLED(b) (!_CAT(SWITCH_ENABLED_, b))
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#define NUMERIC(a) ((a) >= '0' && '9' >= (a))
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#define NUMERIC_SIGNED(a) (NUMERIC(a) || (a) == '-')
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#define COUNT(a) (sizeof(a)/sizeof(*a))
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#define PIN_EXISTS(PN) (defined(PN ##_PIN) && PN ##_PIN >= 0)
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#define PENDING(NOW,SOON) ((long)(NOW-(SOON))<0)
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#define ELAPSED(NOW,SOON) (!PENDING(NOW,SOON))
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#define NOOP do{}while(0)
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#endif //__MACROS_H
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