2.11BSD/include/math.h
/*
* Copyright (c) 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)math.h 1.1 (2.10BSD Berkeley) 12/1/86
*/
extern double fabs(), floor(), ceil(), fmod(), ldexp();
extern double sqrt(), hypot(), atof();
extern double sin(), cos(), tan(), asin(), acos(), atan(), atan2();
extern double exp(), log(), log10(), pow();
extern double sinh(), cosh(), tanh();
extern double gamma();
extern double j0(), j1(), jn(), y0(), y1(), yn();
#define HUGE 1.701411733192644270e38
#define LOGHUGE 39