Difference between revisions of "LlPow"
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Frionil Fang (talk | contribs) (llPow is *very* slow compared to plain multiplication, so for a static integer exponent it's not necessary) |
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| Line 2: | Line 2: | ||
|sort=Pow|func=llPow | |sort=Pow|func=llPow | ||
|func_id=5|func_sleep=0.0|func_energy=10.0 | |func_id=5|func_sleep=0.0|func_energy=10.0 | ||
|func_footnote= | |func_footnote=Returns {{abbr|NaN|not a number}} when {{LSLP|base}} is negative and {{LSLP|exponent}} is not an integer (an imaginary result, <code>({{LSLPT|exponent}} != ([[integer]]){{LSLPT|exponent}}) && ({{LSLPT|base}} < 0.0)</code>). | ||
|p1_type=float|p1_name=base|p1_desc | |p1_type=float|p1_name=base|p1_desc | ||
|p2_type=float|p2_name=exponent|p2_desc | |p2_type=float|p2_name=exponent|p2_desc | ||
| Line 9: | Line 8: | ||
|return_text=that is {{LSLP|base}} raised to the power {{LSLP|exponent}} ({{LSLP|base}}<sup>{{LSLP|exponent}}</sup>) | |return_text=that is {{LSLP|base}} raised to the power {{LSLP|exponent}} ({{LSLP|base}}<sup>{{LSLP|exponent}}</sup>) | ||
|spec | |spec | ||
|caveats=* | |caveats=*If {{LSLP|exponent}} is a static integer and not a variable, llPow is dramatically slower than simple repeated multiplication, i.e. it's much faster to do <code>val = base*base*base</code> instead of <code>val = llPow(base, 3)</code>. | ||
*Triggers a {{LSLGC|Error/Math|Math Error}} for imaginary results if not compiled in Mono. | |||
|examples= | |examples= | ||
< | <syntaxhighlight lang="lsl2">default { | ||
state_entry() { | state_entry() { | ||
llOwnerSay("llPow(5, .5) (" + (string)llPow(5, .5) + ") is equal to llSqrt(5) (" | llOwnerSay("llPow(5, .5) (" + (string)llPow(5, .5) + ") is equal to llSqrt(5) (" | ||
+ (string)llSqrt(5) + ")."); | + (string)llSqrt(5) + ")."); | ||
} | } | ||
}</ | }</syntaxhighlight> | ||
|helpers | |helpers | ||
|also_functions={{LSL DefineRow||[[llLog]]|}} | |also_functions={{LSL DefineRow||[[llLog]]|}} | ||
Latest revision as of 08:38, 1 November 2023
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Summary
Function: float llPow( float base, float exponent );| 5 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a float that is base raised to the power exponent (baseexponent)
| • float | base | |||
| • float | exponent |
Returns NaN when base is negative and exponent is not an integer (an imaginary result, (exponent != (integer)exponent) && (base < 0.0)).
Caveats
- If exponent is a static integer and not a variable, llPow is dramatically slower than simple repeated multiplication, i.e. it's much faster to do
val = base*base*baseinstead ofval = llPow(base, 3). - Triggers a Math Error for imaginary results if not compiled in Mono.
Examples
default {
state_entry() {
llOwnerSay("llPow(5, .5) (" + (string)llPow(5, .5) + ") is equal to llSqrt(5) ("
+ (string)llSqrt(5) + ").");
}
}