MATH-EXPORT(2)MATH-EXPORT(2)NAME
Math: export_int, export_real, export_real32, import_int, import_real,
import_real32 - conversion to and from external representation
SYNOPSIS
include "math.m";
math := load Math Math->PATH;
export_int: fn(b: array of byte, x: array of int);
export_real32: fn(b: array of byte, x: array of real);
export_real: fn(b: array of byte, x: array of real);
import_int: fn(b: array of byte, x: array of int);
import_real32: fn(b: array of byte, x: array of real);
import_real: fn(b: array of byte, x: array of real);
DESCRIPTION
These routines convert between Limbo's internal representation of inte‐
ger and floating-point values, and equivalent external representations
as arrays of bytes, allowing efficient input/output of binary represen‐
tations.
Export_int(b, x) converts each integer element of array x into a
sequence of 4 bytes in array b.
Export_real(b, x) converts each double-precision floating-point element
of array x into a sequence of 8 bytes in array b.
Export_real32(b, x) converts each double-precision floating-point ele‐
ment of array x to a single-precision value, then encodes it as a
sequence of 4 bytes in array b.
Each import_T operation reverses the transformation of the correspond‐
ing export_T operation, converting an array of bytes containing a
sequence of external representations into an array of values of the
appropriate internal form.
Values are encoded in big-endian order (most significant byte first),
with floating-point values represented in IEEE 32-bit or 64-bit form
(again, most significant byte first).
SOURCE
/libinterp/math.c
SEE ALSOmath-intro(2)MATH-EXPORT(2)
