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BSD 4.3reno

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. Neither the name of the University nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
	.asciz "@(#)frexp.s	5.6 (Berkeley) 6/1/90"
#endif /* LIBC_SCCS and not lint */

/* C library -- frexp(value, eptr) */

#include "DEFS.h"

ENTRY(frexp, 0)
	movd	4(ap),r0		# (r0,r1) := value
	extzv	$7,$8,r0,*12(ap)	# Fetch exponent
	jeql	1f			# If exponent zero, we're done
	subl2	$128,*12(ap)		# Bias the exponent appropriately
	insv	$128,$7,$8,r0		# Force result exponent to biased 0
1:
	ret

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