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/* Internal header for random common utility functions. */
#ifndef GD_INTERN_H
#define GD_INTERN_H
#include <limits.h>
#ifndef MAXPATHLEN
# ifdef PATH_MAX
# define MAXPATHLEN PATH_MAX
# elif defined(MAX_PATH)
# define MAXPATHLEN MAX_PATH
# else
# if defined(__GNU__)
# define MAXPATHLEN 4096
# else
# define MAXPATHLEN 256 /* Should be safe for any weird systems that do not define it */
# endif
# endif
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#else
# if defined(HAVE_INTTYPES_H)
# include <inttypes.h>
# else
# include "msinttypes/inttypes.h"
# endif
#endif
#ifdef _MSC_VER
#define ssize_t SSIZE_T
#define MAXSIZE_T ((SIZE_T)~ ((SIZE_T)0))
#define MAXSSIZE_T ((SSIZE_T) (MAXSIZE_T >> 1))
#define MINSSIZE_T ((SSIZE_T)~MAXSSIZE_T)
#define SSIZE_MAX MAXSSIZE_T
#endif
#include "gd.h"
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MIN3(a,b,c) ((a)<(b)?(MIN(a,c)):(MIN(b,c)))
#define MAX(a,b) ((a)<(b)?(b):(a))
#define MAX3(a,b,c) ((a)<(b)?(MAX(b,c)):(MAX(a,c)))
#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
typedef enum {
HORIZONTAL,
VERTICAL,
} gdAxis;
/* Convert a double to an unsigned char, rounding to the nearest
* integer and clamping the result between 0 and max. The absolute
* value of clr must be less than the maximum value of an unsigned
* short. */
static inline unsigned char
uchar_clamp(double clr, unsigned char max) {
unsigned short result;
//assert(fabs(clr) <= SHRT_MAX);
/* Casting a negative float to an unsigned short is undefined.
* However, casting a float to a signed truncates toward zero and
* casting a negative signed value to an unsigned of the same size
* results in a bit-identical value (assuming twos-complement
* arithmetic). This is what we want: all legal negative values
* for clr will be greater than 255. */
/* Convert and clamp. */
result = (unsigned short)(short)(clr + 0.5);
if (result > max) {
result = (clr < 0) ? 0 : max;
}/* if */
return result;
}/* uchar_clamp*/
/* Internal prototypes: */
/* gd_rotate.c */
gdImagePtr gdImageRotate90(gdImagePtr src, int ignoretransparent);
gdImagePtr gdImageRotate180(gdImagePtr src, int ignoretransparent);
gdImagePtr gdImageRotate270(gdImagePtr src, int ignoretransparent);
#endif
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