dec2bin — Convert decimal integers to binary character rows in MATLAB and RunMat.

dec2bin(D) converts each element of D to one binary character row. dec2bin(D, minDigits) pads each row to at least minDigits characters. Numeric arrays are processed in column-major element order and produce one output row per element.

Syntax

dec2bin(D)

How dec2bin works

• D may be numeric, integer, logical, character, or gpuArray numeric data.
• Double inputs are floored before conversion, matching MATLAB dec2bin behavior.
• Nonnegative values are padded with 0 characters.
• Negative values are represented using the smallest signed two's-complement storage width that can contain the value, with additional padding using 1 characters.
• Signed integer inputs preserve their source integer storage width for negative two's-complement output.
• minDigits must be a finite nonnegative integer scalar.
• Outputs larger than RunMat's character-output safety limit are rejected before formatting.
• Complex, non-finite, and unsupported input values raise an error.

Examples

Convert a scalar decimal value

s = dec2bin(23)

Expected output:

s = '10111'

Pad to a minimum width

s = dec2bin(23, 8)

Expected output:

s = '00010111'

Convert multiple values to padded rows

s = dec2bin([1023 122 14])

Expected output:

s = ['1111111111'; '0001111010'; '0000001110']

Format a negative value as two's complement

s = dec2bin(-16)

Expected output:

s = '11110000'

Using dec2bin with coding agents

Open a RunMat example with live inputs, then ask the agent to explain how dec2bin changes the result.

FAQ

Related Comms functions

Open-source implementation

Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how dec2bin is executed, line by line, in Rust.

• View the source for dec2bin in Rust on GitHub
• Learn how the RunMat runtime works
• Found a bug? Open an issue with a minimal reproduction.

About RunMat

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