flatbuffers
Version:
Memory Efficient Serialization Library
47 lines (46 loc) • 1.65 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.paddingSize = exports.fromByteWidth = exports.uwidth = exports.fwidth = exports.iwidth = exports.toByteWidth = void 0;
const bit_width_js_1 = require("./bit-width.js");
function toByteWidth(bitWidth) {
return 1 << bitWidth;
}
exports.toByteWidth = toByteWidth;
function iwidth(value) {
if (value >= -128 && value <= 127)
return bit_width_js_1.BitWidth.WIDTH8;
if (value >= -32768 && value <= 32767)
return bit_width_js_1.BitWidth.WIDTH16;
if (value >= -2147483648 && value <= 2147483647)
return bit_width_js_1.BitWidth.WIDTH32;
return bit_width_js_1.BitWidth.WIDTH64;
}
exports.iwidth = iwidth;
function fwidth(value) {
return value === Math.fround(value) ? bit_width_js_1.BitWidth.WIDTH32 : bit_width_js_1.BitWidth.WIDTH64;
}
exports.fwidth = fwidth;
function uwidth(value) {
if (value <= 255)
return bit_width_js_1.BitWidth.WIDTH8;
if (value <= 65535)
return bit_width_js_1.BitWidth.WIDTH16;
if (value <= 4294967295)
return bit_width_js_1.BitWidth.WIDTH32;
return bit_width_js_1.BitWidth.WIDTH64;
}
exports.uwidth = uwidth;
function fromByteWidth(value) {
if (value === 1)
return bit_width_js_1.BitWidth.WIDTH8;
if (value === 2)
return bit_width_js_1.BitWidth.WIDTH16;
if (value === 4)
return bit_width_js_1.BitWidth.WIDTH32;
return bit_width_js_1.BitWidth.WIDTH64;
}
exports.fromByteWidth = fromByteWidth;
function paddingSize(bufSize, scalarSize) {
return (~bufSize + 1) & (scalarSize - 1);
}
exports.paddingSize = paddingSize;