Float2String
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Summary
Function: string Float2String( float num, integer places, integer rnd );Returns a string that contains the float num in a tidy text format, with optional rounding.
| • float | num | – | number to be formatted | |
| • integer | places | – | number of places to use during formatting | |
| • integer | rnd | – | boolean, enables/disables rounding |
Negative floats are fine (i.e. negative signs will be preserved.)
If you say 1 place, you will get 7.0 instead of 7.0000000
If you say 3 places, you get 7.14 instead of 7.1400000
7.1373699 will come out as 7.13 or 7.14, depending on whether you specify rounding
rnd (rounding) should be set to TRUE for Rounding, FALSE for no rounded
Example:
string myFormattedFloat = Float2String(-7.1373699, 3, TRUE);
//rounded
returns -7.14
string myFormattedFloat = Float2String(-7.1373699, 3, FALSE);
//not rounded
returns -7.13
Specification
string Float2String ( float num, integer places, integer rnd) { //allows string output of a float in a tidy text format //rnd (rounding) should be set to TRUE for rounding, FALSE for no rounding if (rnd) { float f = llPow( 10.0, places ); integer i = llRound(llFabs(num) * f); string s = "00000" + (string)i; // number of 0s is (value of max places - 1 ) if(num < 0.0) return "-" + (string)( (integer)(i / f) ) + "." + llGetSubString( s, -places, -1); return (string)( (integer)(i / f) ) + "." + llGetSubString( s, -places, -1); } if (!places) return (string)((integer)num ); if ( (places = (places - 7 - (places < 1) ) ) & 0x80000000) return llGetSubString((string)num, 0, places); return (string)num; }
Deep Notes
Inspired by (and evolved from) discussions between Cheree Bury & Domino Marama in the SL Scripting Forum July 2008 at http://forums.secondlife.com/showthread.php?t=267884, with optional rounding added (that part being inspired by work by various authors here: Fixed_Precision )
