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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 4x 4x 4x 4x 4x 4x 4x 10x 4x 1x 4x 1x 3x 2x 2x 2x 4x 4x 6x 6x 4x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { AmaliaFunctionCategory, AmaliaFunctionKeys, type AmaliaFormula } from '@amalia/amalia-lang/formula/types';
import { AmaliaFunctionDefault } from '../../AmaliaFunction';
// Wrong type it was ComputeEngineResult instead of number[][] but it's creating a TS error
export const indicesLinear = new AmaliaFunctionDefault<[number, number[][]], number>({
name: AmaliaFunctionKeys.LINEAR,
category: AmaliaFunctionCategory.INDICES,
nbParamsRequired: 2,
description: 'Compare a parameter to tiers in a table and return a calculated value linear to the tier',
exec: (tierToCompare, table) => {
// The assert is good but it's not working because the scope.service return a shitty type, so we must disable it for now
// assert(isComputedEngine2DTable<number>(table), 'In LINEAR, wrong table format');
let toReturn = 0;
let index = 0;
// Sorry for the worst quickaround ever, but I don't have time to fix the type of table
for (const tier of table) {
if (tier[1] >= tierToCompare) {
if (index === 0) {
toReturn = tier[2];
} else if (index === table.length - 1) {
toReturn = tier[2];
} else {
toReturn =
tier[2] + ((tierToCompare - tier[0]) * (table[index + 1][2] - tier[2])) / (table[index + 1][0] - tier[0]);
}
break;
}
index += 1;
}
return toReturn;
},
params: [
{ name: 'parameter', description: 'Variables, fields, properties etc.' },
{
name: 'table',
description:
'Table containing (min and max) and corresponding values. The third column defines the return value corresponding to the lower bound of the interval of the row.',
},
],
examples: [
{
desc: 'Returns 0.6 since 0.55 falls between 0.5 and 0.6 where the lower bound is 0.5 and the upper bound is 0.7',
formula: 'LINEAR(0.55, [[0, 0.3, 0],[0.3, 0.5, 0],[0.5, 0.6, 0.5],[0.6, 0.7, 0.7]])' as AmaliaFormula,
},
{
desc: 'Returns the corresponding linear value of the interval of Target Reach according to the linear curve.',
formula: 'LINEAR(statement.targetReach, statement.payoutGrid)' as AmaliaFormula,
},
],
});
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