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Explain fixed point types

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Alex Beregszaszi 2017-08-29 21:38:41 +01:00
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docs/types.rst
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@ -79,6 +79,15 @@ Fixed Point Numbers
Fixed point numbers are not fully supported by Solidity yet. They can be declared, but
cannot be assigned to or from.
``fixed`` / ``ufixed``: Signed and unsigned fixed point number of various sizes. Keywords ``ufixedMxN`` and ``fixedMxN``, where ``M`` represent the number of bits taken by
the type and ``N`` represent how many decimal points are available. ``M`` must be divisible by 8 and goes from 8 to 256 bits. ``N`` must be between 0 and 80, inclusive.
``ufixed`` and ``fixed`` are aliases for ``ufixed128x19`` and ``fixed128x19``, respectively.
Operators:
* Comparisons: ``<=``, ``<``, ``==``, ``!=``, ``>=``, ``>`` (evaluate to ``bool``)
* Arithmetic operators: ``+``, ``-``, unary ``-``, unary ``+``, ``*``, ``/``, ``%`` (remainder)
.. index:: address, balance, send, call, callcode, delegatecall, transfer
.. _address: