| 1 | #ifndef SLAMACHDEF
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| 2 | #define SLAMACHDEF
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| 3 |
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| 4 | #ifdef __cplusplus
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| 5 | extern "C" {
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| 6 | #endif
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| 7 |
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| 8 | /*
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| 9 | ** - - - - - - - - -
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| 10 | ** s l a m a c . h
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| 11 | ** - - - - - - - - -
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| 12 | **
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| 13 | ** Macros used by slalib library.
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| 14 | **
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| 15 | ** Last revision: 27 January 2000
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| 16 | **
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| 17 | ** Copyright P.T.Wallace. All rights reserved.
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| 18 | */
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| 19 |
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| 20 | /* max(A,B) - larger (most +ve) of two numbers (generic) */
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| 21 | #define gmax(A,B) ((A)>(B)?(A):(B))
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| 22 |
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| 23 | /* min(A,B) - smaller (least +ve) of two numbers (generic) */
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| 24 | #define gmin(A,B) ((A)<(B)?(A):(B))
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| 25 |
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| 26 | /* dint(A) - truncate to nearest whole number towards zero (double) */
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| 27 | #define dint(A) ((A)<0.0?ceil(A):floor(A))
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| 28 |
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| 29 | /* aint(A) - truncate to nearest whole number towards zero (float) */
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| 30 | #define aint(A) ((A)<0.0f?(float)ceil((double)(A)):(float)floor((double)(A)))
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| 31 |
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| 32 | /* dnint(A) - round to nearest whole number (double) */
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| 33 | #define dnint(A) ((A)<0.0?ceil((A)-0.5):floor((A)+0.5))
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| 34 |
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| 35 | /* anint(A) - round to nearest whole number (float) */
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| 36 | #define anint(A) ((float)dnint((double)(A)))
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| 37 |
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| 38 | /* dsign(A,B) - magnitude of A with sign of B (double) */
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| 39 | #define dsign(A,B) ((B)<0.0?-(A):(A))
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| 40 |
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| 41 | /* dmod(A,B) - A modulo B (double) */
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| 42 | #define dmod(A,B) ((B)!=0.0?((A)*(B)>0.0?(A)-(B)*floor((A)/(B))\
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| 43 | :(A)+(B)*floor(-(A)/(B))):(A))
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| 44 |
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| 45 | /* logicals */
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| 46 | #if !defined(FALSE) || ((FALSE)!=0)
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| 47 | #define FALSE 0
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| 48 | #endif
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| 49 | #if !defined(TRUE) || ((TRUE)!=1)
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| 50 | #define TRUE 1
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| 51 | #endif
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| 52 |
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| 53 | /* pi */
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| 54 | #define DPI 3.1415926535897932384626433832795028841971693993751
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| 55 |
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| 56 | /* 2pi */
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| 57 | #define D2PI 6.2831853071795864769252867665590057683943387987502
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| 58 |
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| 59 | /* 1/(2pi) */
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| 60 | #define D1B2PI 0.15915494309189533576888376337251436203445964574046
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| 61 |
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| 62 | /* 4pi */
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| 63 | #define D4PI 12.566370614359172953850573533118011536788677597500
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| 64 |
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| 65 | /* 1/(4pi) */
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| 66 | #define D1B4PI 0.079577471545947667884441881686257181017229822870228
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| 67 |
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| 68 | /* pi^2 */
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| 69 | #define DPISQ 9.8696044010893586188344909998761511353136994072408
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| 70 |
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| 71 | /* sqrt(pi) */
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| 72 | #define DSQRPI 1.7724538509055160272981674833411451827975494561224
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| 73 |
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| 74 | /* pi/2: 90 degrees in radians */
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| 75 | #define DPIBY2 1.5707963267948966192313216916397514420985846996876
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| 76 |
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| 77 | /* pi/180: degrees to radians */
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| 78 | #define DD2R 0.017453292519943295769236907684886127134428718885417
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| 79 |
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| 80 | /* 180/pi: radians to degrees */
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| 81 | #define DR2D 57.295779513082320876798154814105170332405472466564
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| 82 |
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| 83 | /* pi/(180*3600): arcseconds to radians */
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| 84 | #define DAS2R 4.8481368110953599358991410235794797595635330237270e-6
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| 85 |
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| 86 | /* 180*3600/pi : radians to arcseconds */
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| 87 | #define DR2AS 2.0626480624709635515647335733077861319665970087963e5
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| 88 |
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| 89 | /* pi/12: hours to radians */
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| 90 | #define DH2R 0.26179938779914943653855361527329190701643078328126
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| 91 |
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| 92 | /* 12/pi: radians to hours */
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| 93 | #define DR2H 3.8197186342054880584532103209403446888270314977709
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| 94 |
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| 95 | /* pi/(12*3600): seconds of time to radians */
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| 96 | #define DS2R 7.2722052166430399038487115353692196393452995355905e-5
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| 97 |
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| 98 | /* 12*3600/pi: radians to seconds of time */
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| 99 | #define DR2S 1.3750987083139757010431557155385240879777313391975e4
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| 100 |
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| 101 | /* 15/(2pi): hours to degrees x radians to turns */
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| 102 | #define D15B2P 2.3873241463784300365332564505877154305168946861068
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| 103 |
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| 104 | #ifdef __cplusplus
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| 105 | }
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| 106 | #endif
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| 107 |
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| 108 | #endif
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