1
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import { write, read } from "@xtuc/ieee754";
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2
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/**
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3
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* According to https://webassembly.github.io/spec/binary/values.html#binary-float
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4
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* n = 32/8
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5
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*/
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6
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7
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export var NUMBER_OF_BYTE_F32 = 4;
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8
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/**
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9
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* According to https://webassembly.github.io/spec/binary/values.html#binary-float
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10
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* n = 64/8
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11
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*/
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12
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|
13
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export var NUMBER_OF_BYTE_F64 = 8;
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14
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export var SINGLE_PRECISION_MANTISSA = 23;
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15
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export var DOUBLE_PRECISION_MANTISSA = 52;
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16
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export function encodeF32(v) {
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17
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var buffer = [];
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18
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write(buffer, v, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
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19
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return buffer;
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20
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}
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21
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export function encodeF64(v) {
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22
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var buffer = [];
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23
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write(buffer, v, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
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24
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return buffer;
|
25
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}
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26
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export function decodeF32(bytes) {
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27
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var buffer = Buffer.from(bytes);
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28
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return read(buffer, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
|
29
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}
|
30
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export function decodeF64(bytes) {
|
31
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var buffer = Buffer.from(bytes);
|
32
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return read(buffer, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
|
33
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}
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