..  ceil([T,] x, [digits, [base]])

``ceil(x)`` returns the nearest integral value of the same type as ``x``
that is greater than or equal to ``x``.

``ceil(T, x)`` converts the result to type ``T``, throwing an
``InexactError`` if the value is not representable.

``digits`` and ``base`` work as for :func:`round`.


In the Julia programming language, the function ceil is used to round a number up to the nearest integral value.

  1. Round up a floating-point number:

    julia> ceil(3.7)

    This example rounds up the floating-point number 3.7 to 4.0.

  2. Round up a negative number:

    julia> ceil(-2.5)

    It rounds up the negative number -2.5 to -2.0.

  3. Specify the number of digits:

    julia> ceil(3.14159, digits=3)

    By setting the digits argument to 3, it rounds up to the nearest number with three decimal places.

  4. Specify the base for rounding:

    julia> ceil(17, base=5)

    Here, the number 17 is rounded up to the nearest multiple of 5.

  5. Convert the result to a specific type:
    julia> ceil(Int, 2.5)

    By providing the type Int as the first argument, it returns the rounded-up value as an integer.

Common mistake example:

julia> ceil("2.5")
ERROR: MethodError: no method matching ceil(::String)

In this example, the function ceil is applied to a string instead of a numeric value. The ceil function can only be used with numbers, so it's important to pass a valid numeric argument to avoid such errors.

See Also

abs2, beta, binomial, ceil, cell, cross, ctranspose, ctranspose!, cummin, cumprod, cumprod!, cumsum, cumsum!, cumsum_kbn, div, divrem, eigfact, eigfact!, eigmin, eps, erf, erfc, erfcinv, erfcx, erfi, erfinv, exp, exp10, exp2, expm1, exponent, factor, factorial, factorize, floor, gcd, invmod, log, log10, log1p, log2, logspace, max, min, mod, mod1, modf, next, nextpow, nextprod, num, primes, primesmask, prod, realmin, sqrt, sum!, sumabs, sumabs!, sumabs2, sumabs2!,

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