eviofmtswap.c File Reference

#include <stdio.h>
#include "evio.h"

Defines
#define	MIN(a, b)   ( (a) < (b) ? (a) : (b) )
Functions
int	eviofmtswap (uint32_t *iarr, int nwrd, unsigned char *ifmt, int nfmt, int tolocal)
	This function converts (swaps) an array of EVIO composite type data between IEEE (big endian) and DECS (little endian) in place.

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Define Documentation

#define MIN	(	a,
		b		)	( (a) < (b) ? (a) : (b) )

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Function Documentation

int eviofmtswap	(	uint32_t *	iarr,
		int	nwrd,
		unsigned char *	ifmt,
		int	nfmt,
		int	tolocal
	)

This function converts (swaps) an array of EVIO composite type data between IEEE (big endian) and DECS (little endian) in place.

This data does NOT include the composite type's beginning tagsegment and the format string it contains. It also does NOT include the data's bank header words.

Converts the data of array (iarr[i], i=0...nwrd-1) using the format code (ifmt[j], j=0...nfmt-1) .

Algorithm description:

Data processed inside while (ib < nwrd) loop, where 'ib' is iarr[] index; loop breaks when 'ib' reaches the number of elements in iarr[]

Parameters:

	iarr	pointer to data to be swapped
	nwrd	number of data words (32-bit ints) to be swapped
	ifmt	unsigned char array holding translated format
	nfmt	length of unsigned char array, ifmt, in # of chars
	tolocal	if 0 data is of same endian as local host, else data is of opposite endian

Returns:

0 if success

-1 if nwrd or nfmt arg(s) < 0

References EVIO_SWAP16, EVIO_SWAP32, and EVIO_SWAP64.