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File: [Development] / linux-2.6-xfs / arch / powerpc / math-emu / fsel.c (download)

Revision 1.2, Mon Aug 4 17:03:13 2008 UTC (9 years, 2 months ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +1 -1 lines 

Merge up to 2.6.26
Merge of 2.6.x-xfs-melb:linux:31804b by kenmcd.

#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>

#include "soft-fp.h"
#include "double.h"

int
fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
{
	FP_DECL_D(A);

#ifdef DEBUG
	printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC);
#endif

	__FP_UNPACK_D(A, frA);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
	printk("B: %08x %08x\n", frB[0], frB[1]);
	printk("C: %08x %08x\n", frC[0], frC[1]);
#endif

	if (A_c == FP_CLS_NAN || (A_c != FP_CLS_ZERO && A_s)) {
		frD[0] = frB[0];
		frD[1] = frB[1];
	} else {
		frD[0] = frC[0];
		frD[1] = frC[1];
	}

#ifdef DEBUG
	printk("D: %08x.%08x\n", frD[0], frD[1]);
#endif

	return 0;
}