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Casts the input value to a signed 32-bit integer.

this: inputNumberThe input value.


Code Editor (JavaScript)

// Cast a number to signed 32-bit integer: [-2147483648, 2147483647].
var number = ee.Number(100);
print('Number:', number);

var int32Number = number.toInt32();
print('Number cast to int32:', int32Number);

 * Casting numbers to int32 that are outside of its range and precision can
 * modify the resulting value, note the behavior of the following scenarios.

// A floating point number cast to int32 loses decimal precision.
var float = ee.Number(1.7);
print('Floating point value:', float);

var floatToInt32 = float.toInt32();
print('Floating point value cast to int32:', floatToInt32);

// A number greater than int32 range max cast to int32 becomes int32 range max.
var INT32_MAX = 2147483647;
var outOfRangeHi = ee.Number(INT32_MAX + 12345);
print('Greater than int32 max:', outOfRangeHi);

var outOfRangeHiToInt32 = outOfRangeHi.toInt32();
print('Greater than int32 max cast to int32 becomes int32 max:', outOfRangeHiToInt32);

// A number greater than int32 range min cast to int32 becomes int32 range min.
var INT32_MIN = -2147483648;
var outOfRangeLo = ee.Number(INT32_MIN - 12345);
print('Less than int32 min:', outOfRangeLo);

var outOfRangeLoToInt32 = outOfRangeLo.toInt32();
print('Less than int32 min cast to int32 becomes int32 min:', outOfRangeLoToInt32);