/usr/include/pigment-0.3/pgm/pgmcommon.h is in libpigment0.3-dev 0.3.17-1ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* -*- Mode: C; c-basic-offset: 2; indent-tabs-mode: nil -*-
*
* Pigment media rendering library
*
* Copyright © 2006, 2007, 2008 Fluendo Embedded S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author(s): Loïc Molinari <loic@fluendo.com>
* Julien Moutte <julien@fluendo.com>
*/
#ifndef __PGM_COMMON_H__
#define __PGM_COMMON_H__
#include <glib-object.h>
#include <math.h> /* sin, cos, sincos, fabs, fabsf */
G_BEGIN_DECLS
/**
* PGM_DEGREES_TO_RADIANS:
* @theta: an angle in degrees.
*
* Converts from degrees to radians.
*/
#define PGM_DEGREES_TO_RADIANS(theta) ((theta) * (G_PI / 180.0f))
/**
* PGM_RADIANS_TO_DEGREES:
* @theta: an angle in radians.
*
* Converts from radians to degrees.
*/
#define PGM_RADIANS_TO_DEGREES(theta) ((theta) * (180.0f / G_PI))
/**
* PGM_SINCOS:
* @theta: a float representing an angle in radians.
* @s: the address of the float where the sine value is going to be stored.
* @c: the address of the float where the cosine value is going to be stored.
*
* Calculates sine and cosine of the angle @theta simultaneously.
*/
#if HAVE_SINCOSF
#define PGM_SINCOS(theta,s,c) sincosf ((theta), (s), (c))
#elif HAVE_SINF && HAVE_COSF
#define PGM_SINCOS(theta,s,c) \
G_STMT_START { \
*(s) = sinf (theta); \
*(c) = cosf (theta); \
} G_STMT_END
#else
#define PGM_SINCOS(theta,s,c) \
G_STMT_START { \
*(s) = (gfloat) sin ((gdouble) theta); \
*(c) = (gfloat) cos ((gdouble) theta); \
} G_STMT_END
#endif /* HAVE_SINCOS */
/**
* PGM_FABSF:
* @x: the floating-point number.
*
* Calculates the absolute value of float.
*/
#if HAVE_FABSF
#define PGM_FABSF(x) fabsf (x)
#else
#define PGM_FABSF(x) ((gfloat) fabs (x))
#endif /* HAVE_FABSF */
/**
* PgmError:
* @PGM_ERROR_X: Generic error code.
* @PGM_ERROR_OK: No error occured.
*
* Every Pigment method returns an error code from that list.
*/
typedef enum {
PGM_ERROR_X,
PGM_ERROR_OK
} PgmError;
/**
* pgm_lrintf:
* @x: the input floating-point number.
*
* Round @x to nearest integer using the current FPU rounding mode. On platforms
* other than Windows where the C99 lrintf function is not available, the
* function reverts to a float-to-int cast which uses the truncate FPU rounding
* mode.
*
* Returns: the rounded nearest integer.
*/
#if HAVE_LRINTF
#define pgm_lrintf(x) lrintf (x)
#elif defined (_MSC_VER)
gint32 pgm_lrintf (gfloat x);
#else
#define pgm_lrintf(x) (gint32) (x)
#endif
G_END_DECLS
#endif /* __PGM_COMMON_H__ */
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