diff options
Diffstat (limited to 'arch/ppc/math-emu/fsel.c')
-rw-r--r-- | arch/ppc/math-emu/fsel.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/ppc/math-emu/fsel.c b/arch/ppc/math-emu/fsel.c new file mode 100644 index 000000000..1ed9b6697 --- /dev/null +++ b/arch/ppc/math-emu/fsel.c @@ -0,0 +1,41 @@ +/* $Id: fsel.c,v 1.1 1999/08/23 18:59:59 cort Exp $ + */ + +#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; +} |