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In the C and C++ programming languages, an inline function is one qualified with the keyword inline; this serves two purposes: . It serves as a compiler directive that suggests (but does not require) that the compiler substitute the body of the function inline by performing inline expansion, i.e. by inserting the function code at the address of each function call, thereby saving the overhead ...
atan2(y, x) returns the angle θ between the positive x-axis and the ray from the origin to the point (x, y), confined to (−π, π].Graph of (,) over /. In computing and mathematics, the function atan2 is the 2-argument arctangent.
[1] [2] All functions use floating-point numbers in one manner or another. Different C standards provide different, albeit backwards-compatible, sets of functions. Most of these functions are also available in the C++ standard library, though in different headers (the C headers are included as well, but only as a deprecated compatibility feature).
The inherent factor 2 in this identity allows to exhaust the open part of the full codomain (-π, π] of atan2, by doubling the result of the Arctan within (-π / 2 , π / 2 ), leaving just the margin π for an extra alternative in the definition. Massaging the argument expression yields a minor variant.
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Used for inline samples of C++ programming-language markup. Categorizes articles into Category:Articles with example C++ code . The above documentation is transcluded from Template:C++ code inline/doc .
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