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target-ppc: use a correct value to represent 1.0

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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6046 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-12-15 17:13:48 +00:00
parent eb44b959de
commit 05b936038f
1 changed files with 12 additions and 9 deletions
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21
target-ppc/op_helper.c
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@ -1517,7 +1517,8 @@ uint64_t helper_fsqrt (uint64_t arg)
/* fre - fre. */
uint64_t helper_fre (uint64_t arg)
{
CPU_DoubleU farg;
CPU_DoubleU fone, farg;
fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@ -1525,9 +1526,9 @@ uint64_t helper_fre (uint64_t arg)
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(farg.d))) {
/* Zero reciprocal */
farg.ll = float_zero_divide_excp(1.0, farg.d);
farg.ll = float_zero_divide_excp(fone.d, farg.d);
} else if (likely(isnormal(farg.d))) {
farg.d = float64_div(1.0, farg.d, &env->fp_status);
farg.d = float64_div(fone.d, farg.d, &env->fp_status);
} else {
if (farg.ll == 0x8000000000000000ULL) {
farg.ll = 0xFFF0000000000000ULL;
@ -1547,7 +1548,8 @@ uint64_t helper_fre (uint64_t arg)
/* fres - fres. */
uint64_t helper_fres (uint64_t arg)
{
CPU_DoubleU farg;
CPU_DoubleU fone, farg;
fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@ -1555,13 +1557,13 @@ uint64_t helper_fres (uint64_t arg)
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(farg.d))) {
/* Zero reciprocal */
farg.ll = float_zero_divide_excp(1.0, farg.d);
farg.ll = float_zero_divide_excp(fone.d, farg.d);
} else if (likely(isnormal(farg.d))) {
#if USE_PRECISE_EMULATION
farg.d = float64_div(1.0, farg.d, &env->fp_status);
farg.d = float64_div(fone.d, farg.d, &env->fp_status);
farg.d = float64_to_float32(farg.d, &env->fp_status);
#else
farg.d = float32_div(1.0, farg.d, &env->fp_status);
farg.d = float32_div(fone.d, farg.d, &env->fp_status);
#endif
} else {
if (farg.ll == 0x8000000000000000ULL) {
@ -1582,7 +1584,8 @@ uint64_t helper_fres (uint64_t arg)
/* frsqrte - frsqrte. */
uint64_t helper_frsqrte (uint64_t arg)
{
CPU_DoubleU farg;
CPU_DoubleU fone, farg;
fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@ -1593,7 +1596,7 @@ uint64_t helper_frsqrte (uint64_t arg)
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
} else if (likely(isnormal(farg.d))) {
farg.d = float64_sqrt(farg.d, &env->fp_status);
farg.d = float32_div(1.0, farg.d, &env->fp_status);
farg.d = float32_div(fone.d, farg.d, &env->fp_status);
} else {
if (farg.ll == 0x8000000000000000ULL) {
farg.ll = 0xFFF0000000000000ULL;