ceil (value -- ceilingValue)

Inputs

• value: Real value rounded upward.

Outputs

• ceilingValue: Least whole-valued real not smaller than value.

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

Behavior

• A known non-whole positive real rounds upward to the next greater whole-valued real in the same schema.
• A known non-whole negative real rounds upward toward zero, for example -2.1r32 becomes -2.0r32.
• A known whole-valued real is unchanged.
• 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

{} () {} [
  "-- real32 --" printCompilerMessage
  2.1r32 ceil printStack _:;
  -2.1r32 ceil printStack _:;
  2.0r32 ceil printStack _:;

  "-- real64 --" printCompilerMessage
  2.1 ceil printStack _:;
  -2.1 ceil printStack _:;
  2.0 ceil printStack _:;
] "main" exportFunction

Expected Output During Compilation

-- real32 --
3.0r32
-2.0r32
2.0r32
-- real64 --
3.0
-2.0
2.0

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.
• 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.
• sqrt builtin (radicand -- squareRoot) Computes the square root of a Real value and keeps the same real schema.