bops/typedarray/write.js

buffer operations

module.exports = {
    writeUInt8:      write_uint8
  , writeInt8:       write_int8
  , writeUInt16LE:   write_uint16_le
  , writeUInt32LE:   write_uint32_le
  , writeInt16LE:    write_int16_le
  , writeInt32LE:    write_int32_le
  , writeFloatLE:    write_float_le
  , writeDoubleLE:   write_double_le
  , writeUInt16BE:   write_uint16_be
  , writeUInt32BE:   write_uint32_be
  , writeInt16BE:    write_int16_be
  , writeInt32BE:    write_int32_be
  , writeFloatBE:    write_float_be
  , writeDoubleBE:   write_double_be
}

var map = require('./mapped.js')

function write_uint8(target, value, at) {
  return target[at] = value
}

function write_int8(target, value, at) {
  return target[at] = value < 0 ? value + 0x100 : value
}

function write_uint16_le(target, value, at) {
  var dv = map.get(target);
  return dv.setUint16(at + target.byteOffset, value, true)
}

function write_uint32_le(target, value, at) {
  var dv = map.get(target);
  return dv.setUint32(at + target.byteOffset, value, true)
}

function write_int16_le(target, value, at) {
  var dv = map.get(target);
  return dv.setInt16(at + target.byteOffset, value, true)
}

function write_int32_le(target, value, at) {
  var dv = map.get(target);
  return dv.setInt32(at + target.byteOffset, value, true)
}

function write_float_le(target, value, at) {
  var dv = map.get(target);
  return dv.setFloat32(at + target.byteOffset, value, true)
}

function write_double_le(target, value, at) {
  var dv = map.get(target);
  return dv.setFloat64(at + target.byteOffset, value, true)
}

function write_uint16_be(target, value, at) {
  var dv = map.get(target);
  return dv.setUint16(at + target.byteOffset, value, false)
}

function write_uint32_be(target, value, at) {
  var dv = map.get(target);
  return dv.setUint32(at + target.byteOffset, value, false)
}

function write_int16_be(target, value, at) {
  var dv = map.get(target);
  return dv.setInt16(at + target.byteOffset, value, false)
}

function write_int32_be(target, value, at) {
  var dv = map.get(target);
  return dv.setInt32(at + target.byteOffset, value, false)
}

function write_float_be(target, value, at) {
  var dv = map.get(target);
  return dv.setFloat32(at + target.byteOffset, value, false)
}

function write_double_be(target, value, at) {
  var dv = map.get(target);
  return dv.setFloat64(at + target.byteOffset, value, false)
}