[2759] | 1 | /* version 3.4 of grib headers w. ebisuzaki */ |
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| 2 | /* this version is incomplete */ |
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| 3 | /* add center DWD Helmut P. Frank */ |
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| 4 | /* 10/02 add center CPTEC */ |
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| 5 | |
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| 6 | #ifndef INT2 |
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| 7 | #define INT2(a,b) ((1-(int) ((unsigned) (a & 0x80) >> 6)) * (int) (((a & 0x7f) << 8) + b)) |
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| 8 | #endif |
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| 9 | |
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| 10 | #define PDS_Len1(pds) (pds[0]) |
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| 11 | #define PDS_Len2(pds) (pds[1]) |
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| 12 | #define PDS_Len3(pds) (pds[2]) |
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| 13 | #define PDS_LEN(pds) ((int) ((pds[0]<<16)+(pds[1]<<8)+pds[2])) |
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| 14 | #define PDS_Vsn(pds) (pds[3]) |
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| 15 | #define PDS_Center(pds) (pds[4]) |
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| 16 | #define PDS_Model(pds) (pds[5]) |
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| 17 | #define PDS_Grid(pds) (pds[6]) |
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| 18 | #define PDS_HAS_GDS(pds) ((pds[7] & 128) != 0) |
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| 19 | #define PDS_HAS_BMS(pds) ((pds[7] & 64) != 0) |
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| 20 | #define PDS_PARAM(pds) (pds[8]) |
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| 21 | #define PDS_L_TYPE(pds) (pds[9]) |
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| 22 | #define PDS_LEVEL1(pds) (pds[10]) |
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| 23 | #define PDS_LEVEL2(pds) (pds[11]) |
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| 24 | |
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| 25 | #define PDS_KPDS5(pds) (pds[8]) |
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| 26 | #define PDS_KPDS6(pds) (pds[9]) |
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| 27 | #define PDS_KPDS7(pds) ((int) ((pds[10]<<8) + pds[11])) |
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| 28 | |
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| 29 | /* this requires a 32-bit default integer machine */ |
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| 30 | #define PDS_Field(pds) ((pds[8]<<24)+(pds[9]<<16)+(pds[10]<<8)+pds[11]) |
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| 31 | |
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| 32 | #define PDS_Year(pds) (pds[12]) |
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| 33 | #define PDS_Month(pds) (pds[13]) |
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| 34 | #define PDS_Day(pds) (pds[14]) |
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| 35 | #define PDS_Hour(pds) (pds[15]) |
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| 36 | #define PDS_Minute(pds) (pds[16]) |
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| 37 | #define PDS_ForecastTimeUnit(pds) (pds[17]) |
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| 38 | #define PDS_P1(pds) (pds[18]) |
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| 39 | #define PDS_P2(pds) (pds[19]) |
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| 40 | #define PDS_TimeRange(pds) (pds[20]) |
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| 41 | #define PDS_NumAve(pds) ((int) ((pds[21]<<8)+pds[22])) |
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| 42 | #define PDS_NumMissing(pds) (pds[23]) |
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| 43 | #define PDS_Century(pds) (pds[24]) |
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| 44 | #define PDS_Subcenter(pds) (pds[25]) |
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| 45 | #define PDS_DecimalScale(pds) INT2(pds[26],pds[27]) |
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| 46 | /* old #define PDS_Year4(pds) (pds[12] + 100*(pds[24] - (pds[12] != 0))) */ |
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| 47 | #define PDS_Year4(pds) (pds[12] + 100*(pds[24] - 1)) |
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| 48 | |
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| 49 | /* various centers */ |
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| 50 | #define NMC 7 |
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| 51 | #define ECMWF 98 |
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| 52 | #define DWD 78 |
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| 53 | #define CMC 54 |
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| 54 | #define CPTEC 46 |
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| 55 | |
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| 56 | /* ECMWF Extensions */ |
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| 57 | |
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| 58 | #define PDS_EcLocalId(pds) (PDS_LEN(pds) >= 41 ? (pds[40]) : 0) |
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| 59 | #define PDS_EcClass(pds) (PDS_LEN(pds) >= 42 ? (pds[41]) : 0) |
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| 60 | #define PDS_EcType(pds) (PDS_LEN(pds) >= 43 ? (pds[42]) : 0) |
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| 61 | #define PDS_EcStream(pds) (PDS_LEN(pds) >= 45 ? (INT2(pds[43], pds[44])) : 0) |
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| 62 | |
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| 63 | #define PDS_EcENS(pds) (PDS_LEN(pds) >= 52 && pds[40] == 1 && \ |
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| 64 | pds[43] * 256 + pds[44] == 1035 && pds[50] != 0) |
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| 65 | #define PDS_EcFcstNo(pds) (pds[50]) |
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| 66 | #define PDS_EcNoFcst(pds) (pds[51]) |
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| 67 | |
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| 68 | |
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| 69 | /* NCEP Extensions */ |
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| 70 | |
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| 71 | #define PDS_NcepENS(pds) (PDS_LEN(pds) >= 44 && pds[25] == 2 && pds[40] == 1) |
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| 72 | #define PDS_NcepFcstType(pds) (pds[41]) |
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| 73 | #define PDS_NcepFcstNo(pds) (pds[42]) |
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| 74 | #define PDS_NcepFcstProd(pds) (pds[43]) |
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| 75 | |
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| 76 | /* time units */ |
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| 77 | |
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| 78 | #define MINUTE 0 |
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| 79 | #define HOUR 1 |
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| 80 | #define DAY 2 |
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| 81 | #define MONTH 3 |
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| 82 | #define YEAR 4 |
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| 83 | #define DECADE 5 |
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| 84 | #define NORMAL 6 |
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| 85 | #define CENTURY 7 |
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| 86 | #define HOURS3 10 |
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| 87 | #define HOURS6 11 |
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| 88 | #define HOURS12 12 |
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| 89 | #define SECOND 254 |
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| 90 | |
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