OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

softfloat: Inline floatx80 compare specializations

Browse Source 
Replace the floatx80 compare specializations with inline functions
that call the standard floatx80_compare{,_quiet} functions.
Use bool as the return type.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-05-05 10:53:15 -07:00
parent b7b1ac684f
commit c6baf65000
2 changed files with 41 additions and 265 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

257
fpu/softfloat.c
View File

@ -5849,263 +5849,6 @@ floatx80 floatx80_sqrt(floatx80 a, float_status *status)
0, zExp, zSig0, zSig1, status);
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is equal
| to the corresponding value `b', and 0 otherwise. The invalid exception is
| raised if either operand is a NaN. Otherwise, the comparison is performed
| according to the IEC/IEEE Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_eq(floatx80 a, floatx80 b, float_status *status)
{
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)
|| (extractFloatx80Exp(a) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(a) << 1))
|| (extractFloatx80Exp(b) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(b) << 1))
) {
float_raise(float_flag_invalid, status);
return 0;
}
return
( a.low == b.low )
&& ( ( a.high == b.high )
|| ( ( a.low == 0 )
&& ( (uint16_t) ( ( a.high | b.high )<<1 ) == 0 ) )
);
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is
| less than or equal to the corresponding value `b', and 0 otherwise. The
| invalid exception is raised if either operand is a NaN. The comparison is
| performed according to the IEC/IEEE Standard for Binary Floating-Point
| Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_le(floatx80 a, floatx80 b, float_status *status)
{
bool aSign, bSign;
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)
|| (extractFloatx80Exp(a) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(a) << 1))
|| (extractFloatx80Exp(b) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(b) << 1))
) {
float_raise(float_flag_invalid, status);
return 0;
}
aSign = extractFloatx80Sign( a );
bSign = extractFloatx80Sign( b );
if ( aSign != bSign ) {
return
aSign
|| ( ( ( (uint16_t) ( ( a.high | b.high )<<1 ) ) | a.low | b.low )
== 0 );
}
return
aSign ? le128( b.high, b.low, a.high, a.low )
: le128( a.high, a.low, b.high, b.low );
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is
| less than the corresponding value `b', and 0 otherwise. The invalid
| exception is raised if either operand is a NaN. The comparison is performed
| according to the IEC/IEEE Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_lt(floatx80 a, floatx80 b, float_status *status)
{
bool aSign, bSign;
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)
|| (extractFloatx80Exp(a) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(a) << 1))
|| (extractFloatx80Exp(b) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(b) << 1))
) {
float_raise(float_flag_invalid, status);
return 0;
}
aSign = extractFloatx80Sign( a );
bSign = extractFloatx80Sign( b );
if ( aSign != bSign ) {
return
aSign
&& ( ( ( (uint16_t) ( ( a.high | b.high )<<1 ) ) | a.low | b.low )
!= 0 );
}
return
aSign ? lt128( b.high, b.low, a.high, a.low )
: lt128( a.high, a.low, b.high, b.low );
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point values `a' and `b'
| cannot be compared, and 0 otherwise. The invalid exception is raised if
| either operand is a NaN. The comparison is performed according to the
| IEC/IEEE Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_unordered(floatx80 a, floatx80 b, float_status *status)
{
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)
|| (extractFloatx80Exp(a) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(a) << 1))
|| (extractFloatx80Exp(b) == 0x7FFF
&& (uint64_t) (extractFloatx80Frac(b) << 1))
) {
float_raise(float_flag_invalid, status);
return 1;
}
return 0;
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is
| equal to the corresponding value `b', and 0 otherwise. Quiet NaNs do not
| cause an exception. The comparison is performed according to the IEC/IEEE
| Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_eq_quiet(floatx80 a, floatx80 b, float_status *status)
{
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)) {
float_raise(float_flag_invalid, status);
return 0;
}
if ( ( ( extractFloatx80Exp( a ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( a )<<1 ) )
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
if (floatx80_is_signaling_nan(a, status)
|| floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
}
return
( a.low == b.low )
&& ( ( a.high == b.high )
|| ( ( a.low == 0 )
&& ( (uint16_t) ( ( a.high | b.high )<<1 ) == 0 ) )
);
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is less
| than or equal to the corresponding value `b', and 0 otherwise. Quiet NaNs
| do not cause an exception. Otherwise, the comparison is performed according
| to the IEC/IEEE Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_le_quiet(floatx80 a, floatx80 b, float_status *status)
{
bool aSign, bSign;
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)) {
float_raise(float_flag_invalid, status);
return 0;
}
if ( ( ( extractFloatx80Exp( a ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( a )<<1 ) )
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
if (floatx80_is_signaling_nan(a, status)
|| floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
}
aSign = extractFloatx80Sign( a );
bSign = extractFloatx80Sign( b );
if ( aSign != bSign ) {
return
aSign
|| ( ( ( (uint16_t) ( ( a.high | b.high )<<1 ) ) | a.low | b.low )
== 0 );
}
return
aSign ? le128( b.high, b.low, a.high, a.low )
: le128( a.high, a.low, b.high, b.low );
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point value `a' is less
| than the corresponding value `b', and 0 otherwise. Quiet NaNs do not cause
| an exception. Otherwise, the comparison is performed according to the
| IEC/IEEE Standard for Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_lt_quiet(floatx80 a, floatx80 b, float_status *status)
{
bool aSign, bSign;
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)) {
float_raise(float_flag_invalid, status);
return 0;
}
if ( ( ( extractFloatx80Exp( a ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( a )<<1 ) )
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
if (floatx80_is_signaling_nan(a, status)
|| floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 0;
}
aSign = extractFloatx80Sign( a );
bSign = extractFloatx80Sign( b );
if ( aSign != bSign ) {
return
aSign
&& ( ( ( (uint16_t) ( ( a.high | b.high )<<1 ) ) | a.low | b.low )
!= 0 );
}
return
aSign ? lt128( b.high, b.low, a.high, a.low )
: lt128( a.high, a.low, b.high, b.low );
}
/*----------------------------------------------------------------------------
| Returns 1 if the extended double-precision floating-point values `a' and `b'
| cannot be compared, and 0 otherwise. Quiet NaNs do not cause an exception.
| The comparison is performed according to the IEC/IEEE Standard for Binary
| Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
int floatx80_unordered_quiet(floatx80 a, floatx80 b, float_status *status)
{
if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)) {
float_raise(float_flag_invalid, status);
return 1;
}
if ( ( ( extractFloatx80Exp( a ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( a )<<1 ) )
|| ( ( extractFloatx80Exp( b ) == 0x7FFF )
&& (uint64_t) ( extractFloatx80Frac( b )<<1 ) )
) {
if (floatx80_is_signaling_nan(a, status)
|| floatx80_is_signaling_nan(b, status)) {
float_raise(float_flag_invalid, status);
}
return 1;
}
return 0;
}
/*----------------------------------------------------------------------------
| Returns the result of converting the quadruple-precision floating-point
| value `a' to the 32-bit two's complement integer format. The conversion

49
include/fpu/softfloat.h
View File

@ -689,14 +689,6 @@ floatx80 floatx80_mul(floatx80, floatx80, float_status *status);
floatx80 floatx80_div(floatx80, floatx80, float_status *status);
floatx80 floatx80_rem(floatx80, floatx80, float_status *status);
floatx80 floatx80_sqrt(floatx80, float_status *status);
int floatx80_eq(floatx80, floatx80, float_status *status);
int floatx80_le(floatx80, floatx80, float_status *status);
int floatx80_lt(floatx80, floatx80, float_status *status);
int floatx80_unordered(floatx80, floatx80, float_status *status);
int floatx80_eq_quiet(floatx80, floatx80, float_status *status);
int floatx80_le_quiet(floatx80, floatx80, float_status *status);
int floatx80_lt_quiet(floatx80, floatx80, float_status *status);
int floatx80_unordered_quiet(floatx80, floatx80, float_status *status);
FloatRelation floatx80_compare(floatx80, floatx80, float_status *status);
FloatRelation floatx80_compare_quiet(floatx80, floatx80, float_status *status);
int floatx80_is_quiet_nan(floatx80, float_status *status);
@ -746,6 +738,47 @@ static inline int floatx80_is_any_nan(floatx80 a)
return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1);
}
static inline bool floatx80_eq(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare(a, b, s) == float_relation_equal;
}
static inline bool floatx80_le(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare(a, b, s) <= float_relation_equal;
}
static inline bool floatx80_lt(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare(a, b, s) < float_relation_equal;
}
static inline bool floatx80_unordered(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare(a, b, s) == float_relation_unordered;
}
static inline bool floatx80_eq_quiet(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare_quiet(a, b, s) == float_relation_equal;
}
static inline bool floatx80_le_quiet(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare_quiet(a, b, s) <= float_relation_equal;
}
static inline bool floatx80_lt_quiet(floatx80 a, floatx80 b, float_status *s)
{
return floatx80_compare_quiet(a, b, s) < float_relation_equal;
}
static inline bool floatx80_unordered_quiet(floatx80 a, floatx80 b,
float_status *s)
{
return floatx80_compare_quiet(a, b, s) == float_relation_unordered;
}
/*----------------------------------------------------------------------------
| Return whether the given value is an invalid floatx80 encoding.
| Invalid floatx80 encodings arise when the integer bit is not set, but