flintmax - Largest consecutive integer in floating-point format - MATLAB (original) (raw)

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Largest consecutive integer in floating-point format

Syntax

Description

[f](#btpkmp1-1-f) = flintmax returns the largest consecutive integer in IEEE® double precision, which is 2^53. Above this value, double-precision format does not have integer precision, and not all integers can be represented exactly.

example

[f](#btpkmp1-1-f) = flintmax([precision](#btpkmp1-1-precision)) returns the largest consecutive integer in IEEE single or double precision. flintmax returns single(2^24) for single precision and 2^53 for double precision.

example

[f](#btpkmp1-1-f) = flintmax(like=[p](#mw%5Fd80a1eaf-506b-4cd4-af49-3004a81bfa8c)) returns the largest consecutive integer with the same data type, sparsity, and complexity (real or complex) as the floating-point variablep.

example

Examples

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Return the largest consecutive integer in IEEE® double precision, 2^53.

format long e f = flintmax

f = 9.007199254740992e+15

Return the largest consecutive integer in IEEE® single precision, single(2^24).

Check the class of f.

Above the value returned by flintmax("single"), not all integers can be represented exactly with single precision.

Return the largest consecutive integer in IEEE® single precision, single(2^24).

Add 1 to the value returned from flintmax.

f1 is the same as f.

Add 2 to the value returned from flintmax. The number 16777218 is represented exactly in single precision while 16777217 is not.

Return the largest consecutive integer with the same data type and complexity as an existing array.

First, create a complex vector of single data type.

p = single([0.12+2i -0.5i 3]);

Return the largest consecutive integer as a scalar that is complex like p.

f = single

1.6777e+07 +0.0000e+00i

Input Arguments

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Floating-point precision type, specified as "double" or"single".

Data Types: char

Prototype, specified as a floating-point variable.

Data Types: double | single
Complex Number Support: Yes

Output Arguments

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Largest consecutive integer in floating-point format returned as a scalar constant. This constant is 2^53 for double precision and single(2^24) for single precision.

Extended Capabilities

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This function supports tall arrays with the limitations:

• The supported syntax is flintmax(like=p), where the underlying data type of p must be a floating-point type.

For more information, see Tall Arrays.

The flintmax function supports GPU array input with these usage notes and limitations:

• The supported syntax is flintmax(like=p), where the underlying data type of p must be a floating-point type.

For more information, see Run MATLAB Functions on a GPU (Parallel Computing Toolbox).

Usage notes and limitations:

• The supported syntax is flintmax(like=p), where the underlying data type of p must be a floating-point type.

For more information, see Run MATLAB Functions with Distributed Arrays (Parallel Computing Toolbox).

Version History

Introduced in R2013a