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Is there a function that returns the highest and lowest possible numeric values?
934
Solve for x.Use basic rules of algebra to rearrange the function and solve the value for x, when the derivative equals zero. This solution will tell you the x-coordinate of the vertex of the function, which is where the maximum or minimum will occur.
To find the max value for the unsigned integer data type, we take 2 to the power of 16 and substract by 1, which would is 65,535 . We get the number 16 from taking the number of bytes that assigned to the unsigned short int data type (2) and multiple it by the number of bits assigned to each byte (8) and get 16.
help(numeric) sends you to help(double) which has
Double-precision values:
All R platforms are required to work with values conforming tothe IEC 60559 (also known as IEEE 754) standard. This basically works with a precision of 53 bits, and represents to that precision a range of absolute values from about 2e-308 to 2e+308. It also has special values ‘NaN’ (many of them), plus and minus infinity and plus and minus zero (although R acts as if these are the same). There are also _denormal(ized)_ (or _subnormal_) numbers with absolute values above or below the range given above but represented to less precision. See ‘.Machine’ for precise information on these limits. Note that ultimately how double precision numbers are handled is down to the CPU/FPU and compiler.
So you want to look at .Machine which on my 64-bit box has
$double.xmin
[1] 2.22507e-308
$double.xmax
[1] 1.79769e+308
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