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big

big(x)

Convert a number to a maximum precision representation (typically BigInt or BigFloat). See BigFloat for information about some pitfalls with floating-point numbers.

Examples

1. Convert an integer to a BigInt:

   julia> x = big(123456789)
   123456789

   The big function converts the integer 123456789 to a BigInt representation.

2. Convert a floating-point number to a BigFloat:

   julia> y = big(3.14159)
   3.14159

   It converts the floating-point number 3.14159 to a BigFloat.

3. Ensure maximum precision for calculations:

   julia> a = big(2.5)
   2.500000000000000000000000000000000000000000000000000000000000000000000000000000
   
   julia> b = big(0.1)
   0.100000000000000005551115123125782702118158340454101562500000000000000000000000
   
   julia> c = a + b
   2.600000000000000177635683940025046467781066894531250000000000000000000000000000

   This example demonstrates using big to achieve maximum precision when performing calculations involving floating-point numbers.

Common mistake example:

julia> z = big("Hello")
ERROR: MethodError: Cannot `convert` an object of type String to an object of type BigFloat

In this example, the big function is used with a non-numeric value. It's important to note that big is used for converting numbers to their maximum precision representation and not for arbitrary non-numeric types.

See Also

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