Displaying 5 results from an estimated 5 matches for "1e17".
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2009 Apr 17
3
Modular Arithmetic Error?
...i,
I'm using the '%%' operator in some code, and am running into the following erroneous outcome:
> 1.2 %% 0.2
[1] 0.2
Unless I'm very mistaken, the result should be 0 (indeed, 12 %% 2 does result in 0). Furthermore:
> 1.20000000000000001 %% 0.2
[1] 0.2
> (1.2+1e17) %% .2
[1] 0
Warning message:
probable complete loss of accuracy in modulus
(Warning comes up only when it is giving a closer-to-correct answer)
What makes it even stranger is this result:
> (1.2 %% 0.2) == 0.2
[1] FALSE
Does anybody know what's going on here? This seems like v...
2009 Nov 26
1
Arrhenius Plot 2 with lattice
...85,190,195,200,206,210,216,220,225,230,235,240,247,250,255,261,265,270,275,280,285,290,295,300)
#Here I transform my data to make this Arrhenius Plot:
Temp2<-c(1000/Temp)
n2log<-c(log10(n2))
#This function should be plottet as log10(n)~1000/T into the data:
kurve2<-function(T)2^-.5*sqrt(1e17*2*6*I(T^1.5)*(2*pi*0.689*9.109e-31*1.38e-23/43.9e-68)^1.5)*exp(-.047*1.6e-19/(2*1.38e-23*T))
#Here is the plot-function, but I don't know the argument for
#panel.curve()
trellis.device(jpeg,file="Tabh1.jpg",color=FALSE)
n2plot<-xyplot(n2log~Temp2,xlab=list(label="1000/T
(1/K...
1998 Apr 24
1
R-beta: exponentiation
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1999 Mar 06
0
bessel_?.c constants
...machine constants" in bessel_l.c and bessel_j.c which have
different values:
bessel_i.c: static double ensig = 1e16;
bessel_i.c: static double rtnsig = 1e-4;
bessel_i.c: static double enmten = 8.9e-308;
bessel_i.c: static double enten = 1e308;
bessel_j.c: static double ensig = 1e17;
bessel_j.c: static double rtnsig = 1e-4;
bessel_j.c: static double enmten = 1.2e-37;
bessel_j.c: static double enten = 1e38;
According to the comments heading the files, the first set is correct for
IEEE Double-Precision hardware (the comments give the same values for
these parameters in...
1999 Mar 06
1
bessel_?.c constants (fwd)
...machine constants" in bessel_l.c and bessel_j.c which have
different values:
bessel_i.c: static double ensig = 1e16;
bessel_i.c: static double rtnsig = 1e-4;
bessel_i.c: static double enmten = 8.9e-308;
bessel_i.c: static double enten = 1e308;
bessel_j.c: static double ensig = 1e17;
bessel_j.c: static double rtnsig = 1e-4;
bessel_j.c: static double enmten = 1.2e-37;
bessel_j.c: static double enten = 1e38;
According to the comments heading the files, the first set is correct for
IEEE Double-Precision hardware (the comments give the same values for
these parameters in...