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// Evol functions.
// Authors:
// 4144
// Reid
// Description:
// Math functions
// abs(<int>)
// returns the absolute value of the passed integer
function script abs {
.@n = getarg(0);
return .@n >= 0 ? .@n : -.@n;
}
// lognbaselvl({<multiplicator>{, <min value>}})
// returns BaseLevel * logn (BaseLevel * alpha).
function script lognbaselvl {
.@alpha = getarg(0, 1);
.@min = getarg(1, 1);
.@ret = 0;
.@pc_level = BaseLevel * .@alpha;
while (.@pc_level >>= 1)
{
++.@ret;
}
.@ret *= BaseLevel;
if (.@ret <= .@min)
{
.@ret = .@min;
}
return .@ret;
}
// log2(<int>)
// returns the log base 2 of the passed integer, up to 20 (2**20=1.048.576) (round down always)
function script log2 {
.@v=abs(getarg(0));
.@ok=0;
.@i=0;
if (.@v < 1)
return -1;
freeloop(true);
while (!.@ok) {
// exact match
if (2**.@i == .@v) {
.@ok=1;
// inexact match, or limit exceeded
} else if (2**.@i >= .@v || .@i > 20) {
.@ok=1;
.@i-=1; // round down
// not yet
} else {
.@i+=1;
}
}
freeloop(false);
return .@i;
}
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