我写了一个函数，该函数应该计算斐波纳契数到第n个步骤：
fibonnacciNumbers <- function(len) {
fibvals <- numeric(len)
fibvals[1] <- 1
fibvals[2] <- 1
for (i in 3:len) {
fibvals[i] <- fibvals[i-1]+fibvals[i-2]
}
return(fibvals)
}
(fibonnacciNumbers(100))
但是，我的输出如下所示：
[1] 1.000000e+00 1.000000e+00 2.000000e+00 3.000000e+00 5.000000e+00
[6] 8.000000e+00 1.300000e+01 2.100000e+01 3.400000e+01 5.500000e+01
[11] 8.900000e+01 1.440000e+02 2.330000e+02 3.770000e+02 6.100000e+02
[16] 9.870000e+02 1.597000e+03 2.584000e+03 4.181000e+03 6.765000e+03
[21] 1.094600e+04 1.771100e+04 2.865700e+04 4.636800e+04 7.502500e+04
[26] 1.213930e+05 1.964180e+05 3.178110e+05 5.142290e+05 8.320400e+05
[31] 1.346269e+06 2.178309e+06 3.524578e+06 5.702887e+06 9.227465e+06
[36] 1.493035e+07 2.415782e+07 3.908817e+07 6.324599e+07 1.023342e+08
[41] 1.655801e+08 2.679143e+08 4.334944e+08 7.014087e+08 1.134903e+09
[46] 1.836312e+09 2.971215e+09 4.807527e+09 7.778742e+09 1.258627e+10
[51] 2.036501e+10 3.295128e+10 5.331629e+10 8.626757e+10 1.395839e+11
[56] 2.258514e+11 3.654353e+11 5.912867e+11 9.567220e+11 1.548009e+12
[61] 2.504731e+12 4.052740e+12 6.557470e+12 1.061021e+13 1.716768e+13
为什么会有这些舍入错误？他们来自哪里？
感谢您的回答！！！
完全没有错误，数字足够大，R可以更好地使用科学计数法，如果您希望数字不采用科学计数法，请尝试设置数字位数，print例如print(..., digits=19)。还要注意，您可以这样做来设置选项options(digits=19)，然后可以运行fibonnacciNumbers(100)以获取所需的输出。
> print(fibonnacciNumbers(100), digits=19)
[1] 1 1 2 3
[5] 5 8 13 21
[9] 34 55 89 144
[13] 233 377 610 987
[17] 1597 2584 4181 6765
[21] 10946 17711 28657 46368
[25] 75025 121393 196418 317811
[29] 514229 832040 1346269 2178309
[33] 3524578 5702887 9227465 14930352
[37] 24157817 39088169 63245986 102334155
[41] 165580141 267914296 433494437 701408733
[45] 1134903170 1836311903 2971215073 4807526976
[49] 7778742049 12586269025 20365011074 32951280099
[53] 53316291173 86267571272 139583862445 225851433717
[57] 365435296162 591286729879 956722026041 1548008755920
[61] 2504730781961 4052739537881 6557470319842 10610209857723
[65] 17167680177565 27777890035288 44945570212853 72723460248141
[69] 117669030460994 190392490709135 308061521170129 498454011879264
[73] 806515533049393 1304969544928657 2111485077978050 3416454622906707
[77] 5527939700884757 8944394323791464 14472334024676220 23416728348467684
[81] 37889062373143904 61305790721611584 99194853094755488 160500643816367072
[85] 259695496911122560 420196140727489664 679891637638612224 1100087778366101888
[89] 1779979416004713984 2880067194370816000 4660046610375530496 7540113804746346496
[93] 12200160415121876992 19740274219868225536 31940434634990100480 51680708854858326016
[97] 83621143489848426496 135301852344706760704 218922995834555203584 354224848179261997056
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