linux/arch/ppc/math-emu/fsel.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

39 lines
693 B
C

#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", __FUNCTION__, 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;
}