Last change
on this file since 114 was
114,
checked in by smasson, 18 years ago
|
new compilation options (compile_opt idl2, strictarrsubs) in each routine
|
-
Property svn:executable set to
*
|
File size:
970 bytes
|
Rev | Line | |
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[67] | 1 | FUNCTION scan_grib_nbits, num, recstart |
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[114] | 2 | ; |
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| 3 | compile_opt idl2, strictarrsubs |
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| 4 | ; |
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[67] | 5 | |
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| 6 | ; |
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| 7 | nrec = n_elements(recstart) |
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| 8 | nbits = bytarr(nrec) |
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| 9 | ; |
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| 10 | FOR i = 0L, nrec-1 DO BEGIN |
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| 11 | offset = recstart[i]+8 |
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| 12 | a = assoc(num, bytarr(1, /nozero), offset-1) |
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| 13 | sizepds = bit2int([binary(a[1]), binary(a[2]), binary(a[3])]) |
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| 14 | flag = binary(a[8]) |
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| 15 | gdsnotomitted = flag[0] |
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| 16 | bmsnotomitted = flag[1] |
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| 17 | ddd = bit2int([binary(a[27]), binary(a[28])], /checkneg) |
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| 18 | ; |
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| 19 | offset = offset+sizepds |
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| 20 | ; |
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| 21 | IF gdsnotomitted THEN BEGIN |
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| 22 | a = assoc(num, bytarr(1, /nozero), offset-1) |
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| 23 | sizedds = bit2int([binary(a[1]), binary(a[2]), binary(a[3])]) |
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| 24 | offset = offset+sizedds |
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| 25 | ENDIF |
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| 26 | ; |
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| 27 | IF bmsnotomitted THEN BEGIN |
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| 28 | a = assoc(num, bytarr(1, /nozero), offset-1) |
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| 29 | sizebms = bit2int([binary(a[1]), binary(a[2]), binary(a[3])]) |
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| 30 | offset = offset+sizebms |
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| 31 | ENDIF |
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| 32 | |
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| 33 | a = assoc(num, bytarr(1, /nozero), offset-1) |
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| 34 | nbits[i] = a[11] |
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| 35 | |
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| 36 | ENDFOR |
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| 37 | ; |
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| 38 | RETURN, nbits |
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| 39 | END |
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