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Implemented flog2, flog10, and flogn, fixed fneg 

xeyes works now
This commit is contained in:
Peter Rutenbar 2014-11-09 13:56:16 -05:00
parent c7a28b8520
commit 7fa1e15257
1 changed files with 70 additions and 4 deletions
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74
core/newfpu.c
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@ -1479,21 +1479,87 @@ static void inst_fmath_flog10 ()
{
fpu_get_state_ptr();
assert(!"fmath: flog10 not implemented");
const _Bool source_zero = _float128_is_zero(fpu->source);
const _Bool source_inf = _float128_is_infinity(fpu->source);
const _Bool source_sign = _float128_is_neg(fpu->source);
/* If source is zero, set dz, result is -inf */
if (source_zero) {
fpu->result = _assemble_float128(1, 0x7fff, 0, 0);
es_dz = 1;
return;
}
/* If source is negative, set operr, result is nan */
else if (source_sign) {
fpu->result = _nan128;
es_operr = 1;
return;
}
/* If source is +inf, result is +inf. */
else if (source_inf) {
fpu->result = fpu->source;
return;
}
fpu->result = _hack_log10(fpu->source);
}
static void inst_fmath_flog2 ()
{
fpu_get_state_ptr();
assert(!"fmath: flog2 not implemented");
const _Bool source_zero = _float128_is_zero(fpu->source);
const _Bool source_inf = _float128_is_infinity(fpu->source);
const _Bool source_sign = _float128_is_neg(fpu->source);
/* If source is zero, set dz, result is -inf */
if (source_zero) {
fpu->result = _assemble_float128(1, 0x7fff, 0, 0);
es_dz = 1;
return;
}
/* If source is negative, set operr, result is nan */
else if (source_sign) {
fpu->result = _nan128;
es_operr = 1;
return;
}
/* If source is +inf, result is +inf. */
else if (source_inf) {
fpu->result = fpu->source;
return;
}
fpu->result = _hack_log2(fpu->source);
}
static void inst_fmath_flogn ()
{
fpu_get_state_ptr();
assert(!"fmath: flogn not implemented");
const _Bool source_zero = _float128_is_zero(fpu->source);
const _Bool source_inf = _float128_is_infinity(fpu->source);
const _Bool source_sign = _float128_is_neg(fpu->source);
/* If source is zero, set dz, result is -inf */
if (source_zero) {
fpu->result = _assemble_float128(1, 0x7fff, 0, 0);
es_dz = 1;
return;
}
/* If source is negative, set operr, result is nan */
else if (source_sign) {
fpu->result = _nan128;
es_operr = 1;
return;
}
/* If source is +inf, result is +inf. */
else if (source_inf) {
fpu->result = fpu->source;
return;
}
fpu->result = _hack_logn(fpu->source);
}
static void inst_fmath_flognp1 ()
@ -1541,7 +1607,7 @@ static void inst_fmath_fneg ()
fpu_get_state_ptr();
/* Flip the sign bit */
fpu->result = fpu->dest;
fpu->result = fpu->source;
fpu->result.high ^= (1ULL << 63);
/*