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52 lines
1.5 KiB
52 lines
1.5 KiB
"use strict"; |
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Object.defineProperty(exports, "__esModule", { |
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value: true |
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}); |
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exports.encodeF32 = encodeF32; |
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exports.encodeF64 = encodeF64; |
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exports.decodeF32 = decodeF32; |
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exports.decodeF64 = decodeF64; |
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exports.DOUBLE_PRECISION_MANTISSA = exports.SINGLE_PRECISION_MANTISSA = exports.NUMBER_OF_BYTE_F64 = exports.NUMBER_OF_BYTE_F32 = void 0; |
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var _ieee = require("@xtuc/ieee754"); |
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/** |
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* According to https://webassembly.github.io/spec/binary/values.html#binary-float |
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* n = 32/8 |
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*/ |
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var NUMBER_OF_BYTE_F32 = 4; |
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/** |
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* According to https://webassembly.github.io/spec/binary/values.html#binary-float |
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* n = 64/8 |
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*/ |
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exports.NUMBER_OF_BYTE_F32 = NUMBER_OF_BYTE_F32; |
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var NUMBER_OF_BYTE_F64 = 8; |
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exports.NUMBER_OF_BYTE_F64 = NUMBER_OF_BYTE_F64; |
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var SINGLE_PRECISION_MANTISSA = 23; |
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exports.SINGLE_PRECISION_MANTISSA = SINGLE_PRECISION_MANTISSA; |
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var DOUBLE_PRECISION_MANTISSA = 52; |
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exports.DOUBLE_PRECISION_MANTISSA = DOUBLE_PRECISION_MANTISSA; |
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function encodeF32(v) { |
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var buffer = []; |
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(0, _ieee.write)(buffer, v, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32); |
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return buffer; |
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} |
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function encodeF64(v) { |
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var buffer = []; |
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(0, _ieee.write)(buffer, v, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64); |
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return buffer; |
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} |
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function decodeF32(bytes) { |
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var buffer = Buffer.from(bytes); |
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return (0, _ieee.read)(buffer, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32); |
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} |
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function decodeF64(bytes) { |
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var buffer = Buffer.from(bytes); |
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return (0, _ieee.read)(buffer, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64); |
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} |