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Function std.math.rounding.rndtol

Returns x rounded to a long value using the current rounding mode. If the integer value of x is greater than long.max, the result is indeterminate.

long rndtol (
  real x
) pure nothrow @nogc @safe;

long rndtol (
  double x
) pure nothrow @nogc @safe;

long rndtol (
  float x
) pure nothrow @nogc @safe;


writeln(rndtol(1.0)); // 1L
writeln(rndtol(1.2)); // 1L
writeln(rndtol(1.7)); // 2L
writeln(rndtol(1.0001)); // 1L


Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger


Boost License 1.0.