Formualizer Docs
ReferenceFunctionsEngineering Functions

IMLOG10

IMLOG10: Returns the base-10 logarithm of a complex number.

Summary

Produces the principal complex logarithm in base 10.

Remarks

  • Input is coerced to complex-number text before parsing.
  • Returns #NUM! for zero input.
  • Invalid complex text returns #NUM!.

Examples

Base-10 log of a real value
Grid
CellValue
No inputs on Sheet1.
Formula
=
Result
Not evaluated yet.
Expected
1
Base-10 log on imaginary axis
Grid
CellValue
No inputs on Sheet1.
Formula
=
Result
Not evaluated yet.
Expected
0.6821881769209206i

FAQ

What branch of the logarithm does IMLOG10 use?

It returns the principal complex logarithm (base 10), derived from principal argument atan2(imag, real).

Runtime metadata

Category

Engineering

Signature

IMLOG10(arg1: Any)

Arity

min 1, max 1

Arguments

arg1

Any · Scalar

Caps

PURE

Source

crates/formualizer-eval/src/builtins/engineering.rs

IMLN

IMLN: Returns the natural logarithm of a complex number.

IMLOG2

IMLOG2: Returns the base-2 logarithm of a complex number.

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SummaryRemarksExamplesRelated functionsFAQWhat branch of the logarithm does IMLOG10 use?Runtime metadata