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- /* Copyright (C) 1989, 1992 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* math_.h */
- /* Generic substitute for math.h */
-
- /* We must include std.h before any file that includes sys/types.h. */
- #include "std.h"
-
- #ifdef VMS
- /* DEC VAX/VMS C comes with a math.h file, but GNU VAX/VMS C does not. */
- # include "vmsmath.h"
- #else
- # include <math.h>
- #endif
-
- /* math.h is different for Turbo and Unix.... */
- #ifndef M_PI
- # ifdef PI
- # define M_PI PI
- # else
- # define M_PI 3.14159265358979324
- # endif
- #endif
-
- /* Factors for converting between degrees and radians */
- #define degrees_to_radians (M_PI / 180.0)
- #define radians_to_degrees (180.0 / M_PI)
-
- /* Define the hypot procedure on those few systems that don't provide it. */
- #ifdef _IBMR2
- /* The RS/6000 has hypot, but math.h doesn't declare it! */
- extern double hypot(double, double);
- #else
- # if !defined(__TURBOC__) && !defined(BSD4_2) && !defined(VMS)
- # define hypot(x,y) sqrt((x)*(x)+(y)*(y))
- # endif
- #endif
-