148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
/* types.h: general types.
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*
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* Copyright (C) 1992 Free Software Foundation, Inc.
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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, or (at your option)
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* 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 <https://www.gnu.org/licenses/>.
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*/
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#ifndef TYPES_H
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#define TYPES_H
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/* Booleans. */
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typedef enum { false = 0, true = 1 } boolean;
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/* The X11 library defines `FALSE' and `TRUE', and so we only want to
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define them if necessary. */
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#ifndef FALSE
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#define FALSE false
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#define TRUE true
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#endif /* FALSE */
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/* The usual null-terminated string. */
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typedef char *string;
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/* A generic pointer in ANSI C. */
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typedef void *address;
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/* We use `real' for our floating-point variables. */
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typedef double real;
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/* A character code. Perhaps someday we will allow for 16-bit
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character codes, but for now we are restricted to 256 characters per
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font (like TeX and PostScript). */
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typedef unsigned char charcode_type;
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/* Used in file formats. */
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typedef unsigned char one_byte;
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typedef signed char signed_byte;
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typedef unsigned short two_bytes;
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typedef short signed_2_bytes;
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typedef unsigned int four_bytes;
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typedef int signed_4_bytes;
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typedef int byte_count_type;
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/* These are intended to be used for output in file formats where a
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``byte'' is defined to be eight bits, regardless of the hardware. */
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#define ONE_BYTE_BIG (1 << 8)
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#define TWO_BYTES_BIG (1 << 16)
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#define THREE_BYTES_BIG (1 << 24)
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/* Complex numbers. */
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typedef struct
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{
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real real;
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real imag;
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} complex;
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typedef enum { first_complex_part, second_complex_part} complex_part_type;
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typedef enum { polar_rep, rectangular_rep} complex_rep_type;
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/* Dimensions of a rectangle. */
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typedef struct
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{
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unsigned height, width;
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} dimensions_type;
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#define DIMENSIONS_HEIGHT(d) ((d).height)
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#define DIMENSIONS_WIDTH(d) ((d).width)
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/* Cartesian points. */
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typedef struct
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{
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int x, y;
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} coordinate_type;
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typedef struct
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{
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double x, y;
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} real_coordinate_type;
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#if 0
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typedef struct
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{
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double align_threshold;
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double corner_always_threshold;
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unsigned int corner_surround;
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double corner_threshold;
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double error_threshold;
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unsigned int filter_alternative_surround;
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double filter_epsilon;
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unsigned int filter_iteration_count;
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double filter_percent;
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unsigned int filter_secondary_surround;
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unsigned int filter_surround;
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boolean keep_knees;
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double line_reversion_threshold;
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double line_threshold;
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double reparameterize_improvement;
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double reparameterize_threshold;
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double subdivide_search;
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unsigned int subdivide_surround;
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double subdivide_threshold;
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unsigned int tangent_surround;
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} SELVALS;
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#else
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typedef struct
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{
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double align_threshold;
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double corner_always_threshold;
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double corner_surround;
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double corner_threshold;
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double error_threshold;
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double filter_alternative_surround;
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double filter_epsilon;
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double filter_iteration_count;
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double filter_percent;
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double filter_secondary_surround;
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double filter_surround;
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boolean keep_knees;
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double line_reversion_threshold;
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double line_threshold;
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double reparameterize_improvement;
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double reparameterize_threshold;
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double subdivide_search;
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double subdivide_surround;
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double subdivide_threshold;
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double tangent_surround;
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} SELVALS;
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#endif /* 1 */
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#endif /* not TYPES_H */
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