32-bit integers.
This module provides operations on the type int32
of signed 32-bit integers. Unlike the built-in int type,
the type int32 is guaranteed to be exactly 32-bit wide on all
platforms. All arithmetic operations over int32 are taken
modulo 232.
Performance notice: values of type int32 occupy more memory
space than values of type int, and arithmetic operations on
int32 are generally slower than those on int. Use int32
only when the application requires exact 32-bit arithmetic.
external div : int32 -> int32 -> int32 = "%int32_div" Integer division. Raise Division_by_zero if the second
argument is zero. This division rounds the real quotient of
its arguments towards zero, as specified for Pervasives.(/).
external rem : int32 -> int32 -> int32 = "%int32_mod" Integer remainder. If y is not zero, the result
of Int32.rem x y satisfies the following property:
x = Int32.add (Int32.mul (Int32.div x y) y) (Int32.rem x y).
If y = 0, Int32.rem x y raises Division_by_zero.
external shift_left : int32 -> int -> int32 = "%int32_lsl" Int32.shift_left x y shifts x to the left by y bits.
The result is unspecified if y < 0 or y >= 32.
external shift_right : int32 -> int -> int32 = "%int32_asr" Int32.shift_right x y shifts x to the right by y bits.
This is an arithmetic shift: the sign bit of x is replicated
and inserted in the vacated bits.
The result is unspecified if y < 0 or y >= 32.
external shift_right_logical : int32 -> int -> int32 = "%int32_lsr" Int32.shift_right_logical x y shifts x to the right by y bits.
This is a logical shift: zeroes are inserted in the vacated bits
regardless of the sign of x.
The result is unspecified if y < 0 or y >= 32.
external of_int : int -> int32 = "%int32_of_int" Convert the given integer (type int) to a 32-bit integer
(type int32).
external to_int : int32 -> int = "%int32_to_int" Convert the given 32-bit integer (type int32) to an
integer (type int). On 32-bit platforms, the 32-bit integer
is taken modulo 231, i.e. the high-order bit is lost
during the conversion. On 64-bit platforms, the conversion
is exact.
external of_float : float -> int32 = "caml_int32_of_float" "caml_int32_of_float_unboxed" Convert the given floating-point number to a 32-bit integer, discarding the fractional part (truncate towards 0). The result of the conversion is undefined if, after truncation, the number is outside the range [Int32.min_int, Int32.max_int].
external to_float : int32 -> float = "caml_int32_to_float" "caml_int32_to_float_unboxed" Convert the given 32-bit integer to a floating-point number.
external of_string : string -> int32 = "caml_int32_of_string" Convert the given string to a 32-bit integer.
The string is read in decimal (by default) or in hexadecimal,
octal or binary if the string begins with 0x, 0o or 0b
respectively.
Raise Failure "int_of_string" if the given string is not
a valid representation of an integer, or if the integer represented
exceeds the range of integers representable in type int32.
val of_string_opt : string -> int32 optionSame as of_string, but return None instead of raising.
external bits_of_float : float -> int32 = "caml_int32_bits_of_float" "caml_int32_bits_of_float_unboxed" Return the internal representation of the given float according to the IEEE 754 floating-point 'single format' bit layout. Bit 31 of the result represents the sign of the float; bits 30 to 23 represent the (biased) exponent; bits 22 to 0 represent the mantissa.
external float_of_bits : int32 -> float = "caml_int32_float_of_bits" "caml_int32_float_of_bits_unboxed" Return the floating-point number whose internal representation,
according to the IEEE 754 floating-point 'single format' bit layout,
is the given int32.