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Function std.math.nearbyint
Rounds x to the nearest integer value, using the current rounding
mode.
Unlike the rint functions, nearbyint does not raise the
FE_INEXACT exception.
Prototype
real nearbyint( real x ) nothrow @nogc @trusted;
Authors
Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw