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     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 integer and floating-point values, and
          equivalent external representations as arrays of bytes,
          allowing efficient input/output of binary representations.

          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 element 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
          corresponding 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 ALSO
          math-intro(2)

     Page 1                       Plan 9            (printed 12/22/24)