@@ -3972,12 +3972,11 @@ void helper_f2xm1(void)
void helper_fyl2x(void)
{
- double fptemp = floatx80_to_double(ST0);
+ floatx80 temp;
- if (fptemp>0.0){
- fptemp = log(fptemp)/log(2.0); /* log2(ST) */
- fptemp *= floatx80_to_double(ST1);
- ST1 = double_to_floatx80(fptemp);
+ if (! floatx80_is_neg(ST0)) {
+ temp = floatx80_log2(ST0, &env->fp_status);
+ ST1 = floatx80_mul(ST1, temp, &env->fp_status);
fpop();
} else {
env->fpus &= (~0x4700);
@@ -4153,12 +4152,13 @@ void helper_fprem(void)
void helper_fyl2xp1(void)
{
- double fptemp = floatx80_to_double(ST0);
+ floatx80 temp;
- if ((fptemp+1.0)>0.0) {
- fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
- fptemp *= floatx80_to_double(ST1);
- ST1 = double_to_floatx80(fptemp);
+ temp = floatx80_add(ST0, floatx80_one, &env->fp_status);
+ if (!floatx80_is_neg(temp)) {
+ temp = floatx80_add(ST0, floatx80_one, &env->fp_status);
+ temp = floatx80_log2(temp, &env->fp_status);
+ ST1 = floatx80_mul(ST1, temp, &env->fp_status);
fpop();
} else {
env->fpus &= (~0x4700);
Use the new floatx80_log2() softfloat function to implement both helper_fyl2x() and helper_fyl2xp1(). Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> --- target-i386/op_helper.c | 20 ++++++++++---------- 1 files changed, 10 insertions(+), 10 deletions(-)