native-endianness(3scm) Scheme Programmer's Manual native-endianness(3scm)

native-endianness - return the native endianness 

(import (rnrs))                     ;R6RS
(import (rnrs bytevectors))         ;R6RS


(native-endianness)

This procedure returns the native endianness of the system as a symbol. The symbol is normally one of these:
big
Big endian. The more significant bytes come before the less significant bytes.
little
Little endian. The less significant bytes come before the more significant bytes.

Returns a single symbol. 

(native-endianness)
          => little

This procedure is sometimes used when interfacing with external systems that use the native endianness to pass data.

This procedure exists in R6RS and is absent from R7RS-small. SRFI-74 has the native endianness as part of the endianness(3scm) syntax.

Other endianness values may exist and they are in that case valid arguments to the system's bytevector procedures.

Most systems today are little endian, but big endian hardware also exists. Other endianness variants have died out.

This procedure can raise exceptions with the following condition types:
&assertion (R6RS)
The wrong number of arguments was passed.

endianness(3scm), bytevector-u16-native-ref(3scm)

R6RS

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2021-03-09