1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
function t=etime(t1,t0)
// Copyright INRIA
// returns the time in seconds that has elapsed between vectors t1 and t0
// t1 and t0 must be six elements long, in the format:
// t = [Year Month Day Hour Minute Second.Milliseconds]
// or, 10 elements long, in the format returned by getdate()
// t = [Year Month ISO_8601_week_number Julian_day Week_Day Day Hour Minute Second Millisecond]
// in this case ISO_8601_week_number Julian_day Week_Day are ignored
// t1 and t0 can also be matrices having each line equal to a vector described above
// V.C. 2004
if type(t1)<>1 then
error("Wrong type for first input: must be a real vector");
end
if type(t0)<>1 then
error("Wrong type for second input: must be a real vector");
end
if and(size(t1,2)<>[6,10]) then
error("Wrong size for first input: must be a 6 or 10 element long vector");
end
if and(size(t0,2)<>[6,10]) then
error("Wrong size for second input: must be a 6 or 10 element long vector");
end
if size(t1,"*")<>size(t0,"*") then
error("Both operands must have the same size.");
end
if size(t1,2)==10 then
t1(:,3:5)=[]
end
if size(t0,2)==10 then
t0(:,3:5)=[]
end
// Cumulative days per month in a nonleap year
cdm = [0,31,59,90,120,151,181,212,243,273,304,334]
t=0
for k=1:2
if k==1 then
tcur=t1
else
tcur=t0
end
Year=tcur(:,1)
Month=tcur(:,2)
Day=tcur(:,3)
// Make sure month is in the range 1 to 12
Month(Month<1)=1
for kM=1:size(Month,"*")
if Month(kM) > 12 then
Year(kM) = Year(kM) + (Month(kM)-1)/12;
Month(kM) = fix((Month(kM)-1) / 12) + 1;
end
CDM=cdm(Month(kM))
end
tsec = 365.*Year + ceil(Year/4) - ceil(Year/100) + ceil(Year/400) + CDM + Day;
for kM=1:size(Month,"*")
if Month > 2 then
iy=fix(Year)
if fix(iy/4).*4 == iy & fix(iy/100).*100 <> iy | fix(iy/400).*400 == iy then
tsec = tsec+1;
end
end
end
if k==1 then
t=tsec
else
t=t-tsec
end
end
t=86400*t+t1(:,4)*3600-t0(:,4)*3600+t1(:,5)*60-t0(:,5)*60+t1(:,6)-t0(:,6)
if size(t1,2)==7 then
t=t+(t1(:,7)-t0(:,7))*1e-3
end
endfunction
|
