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| ===== Float type ===== | ===== Float type ===== | ||
| - | The $ty[float] type represents a number with decimals, as opposed to the [[integer]] type which is for whole numbers only. | + | The $ty[float] type represents a number with decimals, as opposed to the $lty[integer] type which is for whole numbers only. |
| Floating-point ($ty[float]) constants can be entered in two formats. The first is by just writing the number with its sign, the decimal point (mandatory for the constant to actually be a float and not an integer), and the decimals. For example, ''3.7'' or ''-5.4164'' are valid float constants. Neither the part to the left of the point nor the part to the right of the point are mandatory (e.g. ''37.'' or ''-.25'' are valid), but a point without any digits around it is not a valid floating-point constant. | Floating-point ($ty[float]) constants can be entered in two formats. The first is by just writing the number with its sign, the decimal point (mandatory for the constant to actually be a float and not an integer), and the decimals. For example, ''3.7'' or ''-5.4164'' are valid float constants. Neither the part to the left of the point nor the part to the right of the point are mandatory (e.g. ''37.'' or ''-.25'' are valid), but a point without any digits around it is not a valid floating-point constant. | ||
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| // string using 6 decimal places too. | // string using 6 decimal places too. | ||
| </code> | </code> | ||
| + | |||
| + | The float value $nan is translated to the string ''NaN'', no matter the kind; the float value $pinf is translated to the string ''Infinity'' and the float value $minf to the string ''-Infinity''. This happens also with other functions that convert floats to string (e.g. $lfn[llList2String], $lfn[llDumpList2String]), except one: $lfn[llList2CSV] translates the float value $nan to the string ''nan'' (if it's regular NaN) or ''-nan'' (if it's the indeterminate kind of NaN), and translates $pinf and $minf to ''inf'' and ''-inf'' respectively. | ||
| === Precision caveats === | === Precision caveats === | ||