Common macros/functions. More...
#include <stddef.h>#include <stdint.h>#include <math.h>#include "config.h"
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Data Structures | |
| struct | htm_range |
| Represents a range of integers. More... | |
Defines | |
| #define | HTM_UNUSED __attribute__ ((unused)) |
| Marks a function argument as unused. | |
| #define | HTM_INLINE static HTM_UNUSED |
| Marks a function as inline. | |
| #define | HTM_ALIGNED(x) __attribute__ ((aligned(x))) |
| Marks a structure as requiring alignment to x bytes. | |
| #define | HTM_ISNAN(x) ((x) != (x)) |
Returns 1 if x is a floating point NaN, 0 otherwise. | |
| #define | HTM_ISSPECIAL(x) ((x) != (x) || ((x) != 0.0 && (x) == 2*(x))) |
Returns 1 if x is NaN or +/- Inf, 0 otherwise. | |
| #define | HTM_DEG_PER_RAD 57.2957795130823208767981548141 |
| Degrees per radian. | |
| #define | HTM_RAD_PER_DEG 0.0174532925199432957692369076849 |
| Radians per degree. | |
| #define | HTM_ARCSEC_PER_DEG 3600.0 |
| Arcseconds per degree. | |
Enumerations | |
| enum | htm_errcode { HTM_OK = 0, HTM_ENOMEM, HTM_ENULLPTR, HTM_ENANINF, HTM_EZERONORM, HTM_ELAT, HTM_EANG, HTM_EHEMIS, HTM_ELEN, HTM_EDEGEN, HTM_EID, HTM_ELEVEL, HTM_EIO, HTM_EMMAN, HTM_EINV, HTM_ETREE, HTM_NUM_CODES } |
| Library error codes. More... | |
Functions | |
| HTM_INLINE int | htm_popcount (uint64_t x) |
| Counts the number of 1 bits in a 64 bit integer. | |
| const char * | htm_errmsg (enum htm_errcode err) |
| Returns an error message for the given error code. | |
| HTM_INLINE double | htm_angred (double angle_deg) |
Returns the given angle, range-reduced to lie in [0, 360) degrees. | |
| HTM_INLINE double | htm_clamp (double x, double min, double max) |
Returns the value of x clamped to [min, max]. | |
