diff options
| author | Paul Mackerras <paulus@samba.org> | 2006-03-28 17:03:19 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-03-28 17:03:19 +1100 |
| commit | cf66c897d7fa07f57452b1a369aec37d97b11e31 (patch) | |
| tree | eb74b71c2ff288f4d77423bb7e54c3c55ef08bf9 /arch/powerpc/math-emu/fsqrt.c | |
| parent | facee873de8da5fe709c194f98eb0f2cc642a38c (diff) | |
| parent | 78af90629ce98c8383ea16928e110eb97b889be6 (diff) | |
Merge branch '85xx' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc
Diffstat (limited to 'arch/powerpc/math-emu/fsqrt.c')
| -rw-r--r-- | arch/powerpc/math-emu/fsqrt.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fsqrt.c b/arch/powerpc/math-emu/fsqrt.c new file mode 100644 index 00000000000..6f8319f64a8 --- /dev/null +++ b/arch/powerpc/math-emu/fsqrt.c @@ -0,0 +1,37 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" + +int +fsqrt(void *frD, void *frB) +{ + FP_DECL_D(B); + FP_DECL_D(R); + int ret = 0; + +#ifdef DEBUG + printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frB); +#endif + + __FP_UNPACK_D(B, frB); + +#ifdef DEBUG + printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); +#endif + + if (B_s && B_c != FP_CLS_ZERO) + ret |= EFLAG_VXSQRT; + if (B_c == FP_CLS_NAN) + ret |= EFLAG_VXSNAN; + + FP_SQRT_D(R, B); + +#ifdef DEBUG + printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); +#endif + + return (ret | __FP_PACK_D(frD, R)); +} |