sqrt (radicand -- squareRoot)

Inputs

• radicand: Real radicand.

Outputs

• squareRoot: Square root in the same real schema.

sqrt accepts Real32 and Real64 values. The input is dereferenced and must be non-NIL.

Behavior

• A known non-negative real produces the known square root in the same real schema.
• A known negative real produces the real square-root result, such as nanr32 for -1.0r32.
• An unknown real produces an unknown value of the same real schema.
• The result keeps the same real schema as the input. It does not become an Int.

Example

{} () {} [
  "-- known real32 --" printCompilerMessage
  9.0r32 sqrt printStack _:;
  2.25r32 sqrt printStack _:;
  -1.0r32 sqrt printStack _:;

  "-- unknown real32 --" printCompilerMessage
  value: 0.0r32 dynamic;
  value sqrt printStack _:;
] "main" exportFunction

Expected Output During Compilation

-- known real32 --
3.0r32
1.5r32
nanr32
-- unknown real32 --
Real32

See also

• ^ builtin (base exponent -- power) Raises one Real value to another of the same schema and keeps that real schema in the result.
• cast builtin (value schema -- convertedValue) Casts a Cond or numeric value to the numeric schema selected by the schema input.
• ceil builtin (value -- ceilingValue) Rounds a Real value upward and keeps the same real schema.
• cos builtin (angle -- cosine) Computes the cosine of a Real value and keeps the same real schema.
• floor builtin (value -- floorValue) Rounds a Real value downward and keeps the same real schema.
• log builtin (argument -- naturalLogarithm) Computes the natural logarithm of a Real value and keeps the same real schema.
• log10 builtin (argument -- decimalLogarithm) Computes the base-10 logarithm of a Real value and keeps the same real schema.
• neg builtin (value -- negatedValue) Negates a signed Int or Real value and keeps the same schema.
• sin builtin (angle -- sine) Computes the sine of a Real value and keeps the same real schema.