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54 lines
1.1 KiB
Markdown
54 lines
1.1 KiB
Markdown
---
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title: "cmath"
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aliases:
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- firmwareapi/micropython/cmath.html
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- firmwareapi/micropython/cmath.md
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- chapter/firmwareapi/micropython/cmath
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---
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The `cmath` module provides some basic mathematical functions for working with complex numbers. Floating point support required for this module.
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## Methods
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#### cmath.cos(z)
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Return the cosine of `z`.
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#### cmath.exp(z)
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Return the exponential of `z`.
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#### cmath.log(z)
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Return the natural logarithm of `z`. The branch cut is along the negative real axis.
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#### cmath.log10(z)
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Return the base-10 logarithm of `z`. The branch cut is along the negative real axis.
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#### cmath.phase(z)
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Returns the phase of the number `z`, in the range (-pi, +pi).
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#### cmath.polar(z)
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Returns, as a tuple, the polar form of `z`.
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#### cmath.rect(r, phi)
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Returns the complex number with modulus `r` and phase `phi`.
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#### cmath.sin(z)
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Return the sine of `z`.
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#### cmath.sqrt(z)
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Return the square-root of `z`.
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## Constants
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* `cmath.e`: Base of the natural logarithm
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* `cmath.pi`: The ratio of a circle's circumference to its diameter
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