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126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/*
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math.h
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Built-in math function definitions
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Copyright (C) 2002 Bill Currie <taniwha@quakeforge.net>
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Copyright (C) 2002 Jeff Teunissen <deek@quakeforge.net>
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This file is part of the Ruamoko Standard Library.
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifndef __ruamoko_math_h
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#define __ruamoko_math_h
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/*
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random
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Generate a random number such that 0 <= num <= 1 (0 to 1 inclusive)
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*/
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@extern float () random;
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/*
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ftoi
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Returns the integer component of f
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*/
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@extern integer (float f) ftoi;
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/*
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itof
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Returns the float representation of i
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*/
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@extern float (integer i) itof;
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/*
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rint
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Rounds v to the nearest integer value and returns it.
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rint() does not change the type.
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*/
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@extern float (float v) rint;
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/*
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floor
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Returns v, rounded down to the next lower integer
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*/
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@extern float (float v) floor;
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/*
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ceil
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Returns v, rounded up to the next highest integer
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*/
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@extern float (float v) ceil;
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/*
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fabs
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Returns the absolute value of v
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*/
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@extern float (float f) fabs;
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/****************************************************************************
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* VECTORS *
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****************************************************************************/
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@extern vector v_forward, v_up, v_right;
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/*
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makevectors
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Set v_forward, v_up, v_right global vectors from the vector ang
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*/
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@extern void (vector ang) makevectors;
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/*
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normalize
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Transform vector v into a unit vector (a vector with a length of 1).
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The direction is not changed, except for (possible) roundoff errors.
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*/
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@extern vector (vector v) normalize;
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/*
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vlen
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Return the length of vector v
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*/
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@extern float (vector v) vlen;
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/*
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vectoyaw
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Returns the yaw angle ("bearing"), in degrees, associated with vector v.
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*/
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@extern float (vector v) vectoyaw;
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/*
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vectoangles
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Returns a vector 'pitch yaw 0' corresponding to vector v.
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*/
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@extern vector (vector v) vectoangles;
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#endif //__ruamoko_math_h
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