digits — Get or set the default variable-precision digit count.
digits returns the current default precision for vpa. digits(d) sets the precision and returns the previous value. digits('default') resets the setting to 32.
Syntax
digits(d)How digits works
- The default value is 32 significant digits.
- Accepted digit counts are positive integer scalar values in the supported range.
- The setting affects later
vpa(x)calls that omit an explicit precision.
Example
Set and reset precision
old = digits(50)
x = vpa(sym('1/3'))
digits('default')Using digits with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how digits changes the result.
Run a small digits example, explain the result, then change one input and compare the output.
FAQ
Does digits change ordinary double precision arithmetic?⌄
No. It only controls the default significant-digit count used by symbolic variable-precision operations such as vpa.
Related Math functions
Elementwise
abs · angle · complex · conj · double · exp · expm1 · factorial · gamma · heaviside · hypot · imag · ldivide · log · log10 · log1p · log2 · minus · nextpow2 · plus · pow2 · power · rdivide · real · sign · single · sqrt · times
Trigonometry
acos · acosh · asin · asinh · atan · atan2 · atanh · cos · cosd · cosh · deg2rad · rad2deg · sin · sind · sinh · tan · tand · tanh
Reduction
all · any · cummax · cummin · cumprod · cumsum · cumtrapz · diff · gradient · max · mean · median · min · nnz · prod · std · sum · trapz · var
Structure
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how digits is executed, line by line, in Rust.
- View the source for digits 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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