A Latin-1 string describing the endian mode, e.g. "LE" for little-endian or "BE" for big-endian.

Use r#scan lds8 to read one octet with r as a signed 8-bit integer in the range -128 to 127.

Use r#scan ldu8 to read one octet with r as an unsigned 8-bit integer in the range 0 to 255.

Use r#scan lds16 to read two octets with r as a signed 16-bit integer in the range -32768 to 32767.

Use r#scan ldu16 to read two octets with r as an unsigned 16-bit integer in the range 0 to 65535.

Use r#scan lds32 to read four octets with r as a signed 32-bit integer in the range -2147483648 to 2147483647. Raises Cf_decode.Invalid where Sys.int_length < 32 and the value cannot be represented by the OCaml int type.

Use r#scan ldu32 to read four octets with r as an unsigned 32-bit integer in the range 0 to 4294967295. Raises Cf_decode.Invalid if the value cannot be represented by the OCaml int type.

Use r#scan lds64 to read eight octets with r as a signed 64-bit integer in the range -9223372036854775808 to 9223372036854775807. Raises Cf_decode.Invalid if the value cannot be represented by the OCaml int type.

Use r#scan ldu64 to read eight octets with r as an unsigned 64-bit integer in the range 0 to 18446744073709551615. Raises Cf_decode.Invalid if the value cannot be represented by the OCaml int type.

Use r#scan ldi32 to read four octets with r as a signed 32-bit integer in the range -2147483648 to 2147483647.

Use r#scan ldi32 to read eight octets with r as a signed 64-bit integer in the range -9223372036854775808 to 9223372036854775807.

Use r#scan ldf16 to read two octets with r as a binary16 format IEEE 754 floating point number.

Use r#scan ldf32 to read four octets with r as a binary32 format IEEE 754 floating point number.

Use r#scan ldf64 to read eight octets with r as a binary64 format IEEE 754 floating point number.

Use w#emit sts8 to write with w a signed 8-bit integer as one octet. Raises Invalid_argument if the value to emit is not in the range -128 to 127.

Use w#emit stu8 to write with w an unsigned 8-bit integer as one octet. Raises Invalid_argument if the value to emit is not in the range 0 to 255.

Use w#emit sts16 to write with w a signed 16-bit integer as two octets. Raises Invalid_argument if the value to emit is not in the range -32768 to 32767.

Use w#emit stu16 to write with w an unsigned 16-bit integer as two octets. Raises Invalid_argument if the value to emit is not in the range 0 to 65535.

Use w#emit sts32 to write with w a signed 32-bit integer as four octets. Raises Invalid_argument if the value to emit is not in the range -32768 to 32767.

Use w#emit stu32 to write with w an unsigned 32-bit integer as four octets. Raises Invalid_argument if the value to emit is not in the range 0 to 65535.

Use w#emit sts64 to write with w a signed 64-bit integer as eight octets. Raises Invalid_argument if the value to emit is not in the range -9223372036854775808 to 9223372036854775807.

Use w#emit stu64 to write with w an unsigned 64-bit integer as eight octets. Raises Invalid_argument if the value to emit is not in the range 0 to 18446744073709551615.

Use w#emit sti32 to write with w a signed 32-bit integer as four octets.

Use w#emit sti64 to write with w a signed 64-bit integer as eight octets.

Use w#emit stf16 to write with w a floating point number as the four octets comprising a binary16 format IEEE 754 number. Raises Imprecise if the conversion truncates the fractional part or overflows the exponent part. Conversion of NaN always results in a signaling NaN.

Use w#emit stf32 to write with w a floating point number as the four octets comprising a binary32 format IEEE 754 number. Raises Imprecise if the conversion truncates the fractional part or overflows the exponent part. Conversion of NaN always results in a signaling NaN.

Use w#emit stf64 to write with w a floating point number as the eight octets comprising a binary64 format IEEE 754 number.