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functions:lllog10 [2014-12-09 16:46 SLT] sei Add nav |
functions:lllog10 [2015-02-04 08:15 SLT] (current) sei style |
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| === arg === | === arg === | ||
| - | The float value whose logarithm in base 10 is to be calculated. | + | The $lty[float] value whose logarithm in base 10 is to be calculated. |
| ===== Return value ===== | ===== Return value ===== | ||
| - | Returns a [[types/float]] with the logarithm in base 10 of the argument. | + | Returns a $lty[float] with the logarithm in base 10 of the argument. |
| ===== Notes ===== | ===== Notes ===== | ||
| * In order to make sense, the argument must be greater than 0.0; a value of 0.0 or less yields 0.0. | * In order to make sense, the argument must be greater than 0.0; a value of 0.0 or less yields 0.0. | ||
| - | * The function returns **Infinity** if the input is **Infinity**, and 0.0 if the input is **-Infinity** or **NaN**. | + | * The function returns $pinf if the input is $pinf, and 0.0 if the input is $minf or $nan. |
| - | * To calculate the natural logarithm, [[llLog]] can be used. | + | * To calculate the natural logarithm, $lfn[llLog] can be used. |
| - | * To calculate the logarithm in any other base, there is a recipe in the Notes section of [[llLog]]. | + | * To calculate the logarithm in any other base, there is a recipe in the Notes section of $lfn[llLog]. |
| - | * There is no built-in inverse of this function. To raise 10 to a power, you can use ''llPow(10, power)''. But if you want to raise 10 to an integer constant, better use scientific notation, for example ''1e32'' means 10 to the 32nd power (10<sup>32</sup>). See [[types/float]] for a description of scientific notation. | + | * There is no built-in inverse of this function. To raise 10 to a power, you can use ''llPow(10, power)''. But if you want to raise 10 to an integer constant, better use scientific notation, for example ''1e32'' means 10 to the 32nd power (10<sup>32</sup>). See $lty[float] for a description of scientific notation. |
| ===== Short examples ===== | ===== Short examples ===== | ||
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| ===== See also ===== | ===== See also ===== | ||
| - | * [[llLog]] to calculate the natural logarithm. | + | * $lfn[llLog] to calculate the natural logarithm. |
| - | * [[llPow]] to raise a number to a power (also called antilogarithm). | + | * $lfn[llPow] to raise a number to a power (also called antilogarithm). |
| - | * [[types/float]] type and associated caveats and limitations. | + | * $lty[float] type and associated caveats and limitations. |