[9] | 1 | ;------------------------------------------------------------ |
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| 2 | ;------------------------------------------------------------ |
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| 3 | ;------------------------------------------------------------ |
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| 4 | ;+ |
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| 5 | ; NAME:daysinmonth |
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| 6 | ; |
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| 7 | ; PURPOSE:give the nomber of days in a specefic month |
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| 8 | ; |
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| 9 | ; CATEGORY: calandar |
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| 10 | ; |
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| 11 | ; CALLING SEQUENCE: ndays = daysinmonth([month[, year]]) |
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| 12 | ; |
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| 13 | ; INPUTS (optionnal): month and year. Year is used only if the |
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| 14 | ; common variable key_caltype = 'greg'. In that case, month |
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| 15 | ; and year must have the same number of elements. if not |
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| 16 | ; provided, we take month and year from "time" common variable. |
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| 17 | ; |
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| 18 | ; KEYWORD PARAMETERS: |
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| 19 | ; |
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| 20 | ; OUTPUTS: |
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| 21 | ; |
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| 22 | ; COMMON BLOCKS: cm_4cal |
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| 23 | ; |
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| 24 | ; SIDE EFFECTS: return -1 in case of error |
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| 25 | ; |
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| 26 | ; RESTRICTIONS: |
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| 27 | ; |
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| 28 | ; EXAMPLE: |
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| 29 | ; |
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| 30 | ; MODIFICATION HISTORY: Sebastien Masson (smasson@lodyc.jussieu.fr) |
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| 31 | ; 2/7/98 |
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| 32 | ; update/review/english/new commons: June 2005 Sebastien Masson. |
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| 33 | ;- |
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| 34 | ;------------------------------------------------------------ |
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| 35 | ;------------------------------------------------------------ |
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| 36 | ;------------------------------------------------------------ |
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| 37 | function daysinmonth, month, year |
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| 38 | ;------------------------------------------------------------ |
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| 39 | ; include commons |
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| 40 | @cm_4cal |
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| 41 | IF NOT keyword_set(key_forgetold) THEN BEGIN |
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| 42 | @updatenew |
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| 43 | ENDIF |
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| 44 | ;------------------------------------------------------------ |
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| 45 | IF n_elements(key_caltype) EQ 0 THEN key_caltype = 'greg' |
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| 46 | CASE key_caltype OF |
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| 47 | '360d': if n_elements(month) GT 1 THEN $ |
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| 48 | return, replicate(30, n_elements(month)) ELSE return, 30 |
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| 49 | 'noleap':BEGIN |
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| 50 | days_in_mth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] |
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| 51 | IF n_elements(month) EQ 0 THEN caldat, time, month |
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| 52 | return, days_in_mth[month-1] |
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| 53 | END |
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| 54 | 'greg':BEGIN |
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| 55 | CASE n_params() OF |
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| 56 | 0:caldat, time, month, day, year |
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| 57 | 2:IF n_elements(month) NE n_elements(year) THEN $ |
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| 58 | return, report('month and year must have the same number of elements') |
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| 59 | ELSE:return, report('daysinmonth accept 0 or 2 input parameters') |
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| 60 | ENDCASE |
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| 61 | days_in_mth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] |
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| 62 | return, days_in_mth[month-1] + leapyr(year)*(month EQ 2) |
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| 63 | END |
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| 64 | ELSE:return, report('only 3 types of calendar are accepted: greg, 360d and noleap') |
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| 65 | ENDCASE |
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| 66 | |
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| 67 | END |
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