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In Ruby everything is an object. That's why I don't understand why we have the Math module. It seems to me that most (all?) of the functions in the Math module should have been methods on the numeric types like Integer, Float and so on.
E.g. instead of
Math.sqrt(5) it would make more sense to have
5.sqrt The same goes for sin, cos, tan, log10 and so on.
Does anyone know why all these functions ended up in the Math module?
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Math. sqrt() returns the square root of a value of type double passed to it as argument. If the argument is NaN or negative, then the result is NaN. If the argument is positive infinity, then the result is positive infinity.
The math. sqrt() method returns the square root of a number. Note: The number must be greater than or equal to 0.
The sqrt() function takes a single argument (in double ) and returns its square root (also in double ). The sqrt() function is defined in math. h header file. To find the square root of int , float or long double data types, you can explicitly convert the type to double using cast operator.
sqrt() function is an inbuilt function in Python programming language that returns the square root of any number. Syntax: math. sqrt(x) Parameter: x is any number such that x>=0 Returns: It returns the square root of the number passed in the parameter.
I don't know the early history of Ruby, but I have a feeling the Math module was modelled after the C <math.h> header. It is an odd duck in the Ruby standard library though.
But, it's Ruby! So you can always bust out the monkey patching!
class Float def sqrt; Math.sqrt(self); end def sin; Math.sin(self); end def cos; Math.cos(self); end def tan; Math.tan(self); end def log10; Math.log10(self); end end If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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