Update to the SoftFloat-2c version of softfloat-specialize.h and softfloat.h.
This includes a simplification of the license and updates the comments. NFC.
This commit is contained in:
thorpej
parent
e2052aea2d
commit
e450f2e45d
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: softfloat-specialize.h,v 1.2 2008/04/28 20:24:06 martin Exp $ */
|
||||
/* $NetBSD: softfloat-specialize.h,v 1.3 2020/09/02 03:41:56 thorpej Exp $ */
|
||||
|
||||
/* This is a derivative work. */
|
||||
|
||||
|
|
@ -31,68 +31,55 @@
|
|||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
===============================================================================
|
||||
/*============================================================================
|
||||
|
||||
This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
|
||||
Arithmetic Package, Release 2a.
|
||||
This C source fragment is part of the Berkeley SoftFloat IEEE Floating-Point
|
||||
Arithmetic Package, Release 2c, by John R. Hauser.
|
||||
|
||||
Written by John R. Hauser. This work was made possible in part by the
|
||||
International Computer Science Institute, located at Suite 600, 1947 Center
|
||||
Street, Berkeley, California 94704. Funding was partially provided by the
|
||||
National Science Foundation under grant MIP-9311980. The original version
|
||||
of this code was written as part of a project to build a fixed-point vector
|
||||
processor in collaboration with the University of California at Berkeley,
|
||||
overseen by Profs. Nelson Morgan and John Wawrzynek. More information
|
||||
is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
|
||||
arithmetic/SoftFloat.html'.
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
|
||||
been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
|
||||
RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
|
||||
AND ORGANIZATIONS WHO CAN AND WILL TOLERATE ALL LOSSES, COSTS, OR OTHER
|
||||
PROBLEMS THEY INCUR DUE TO THE SOFTWARE WITHOUT RECOMPENSE FROM JOHN HAUSER OR
|
||||
THE INTERNATIONAL COMPUTER SCIENCE INSTITUTE, AND WHO FURTHERMORE EFFECTIVELY
|
||||
INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE INSTITUTE
|
||||
(possibly via similar legal notice) AGAINST ALL LOSSES, COSTS, OR OTHER
|
||||
PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE, OR
|
||||
INCURRED BY ANYONE DUE TO A DERIVATIVE WORK THEY CREATE USING ANY PART OF THE
|
||||
SOFTWARE.
|
||||
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
|
||||
has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
|
||||
TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
|
||||
PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
|
||||
AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
|
||||
Derivative works require also that (1) the source code for the derivative work
|
||||
includes prominent notice that the work is derivative, and (2) the source code
|
||||
includes prominent notice of these three paragraphs for those parts of this
|
||||
code that are retained.
|
||||
|
||||
Derivative works are acceptable, even for commercial purposes, so long as
|
||||
(1) they include prominent notice that the work is derivative, and (2) they
|
||||
include prominent notice akin to these four paragraphs for those parts of
|
||||
this code that are retained.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Underflow tininess-detection mode, statically initialized to default value.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
=============================================================================*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Underflow tininess-detection mode, statically initialized to default value.
|
||||
| (The declaration in `softfloat.h' must match the `int8' type here.)
|
||||
*----------------------------------------------------------------------------*/
|
||||
/* [ MP safe, does not change dynamically ] */
|
||||
int float_detect_tininess = float_tininess_after_rounding;
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Internal canonical NaN format.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Internal canonical NaN format.
|
||||
*----------------------------------------------------------------------------*/
|
||||
typedef struct {
|
||||
flag sign;
|
||||
bits64 high, low;
|
||||
} commonNaNT;
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The pattern for a default generated single-precision NaN.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| The pattern for a default generated single-precision NaN.
|
||||
*----------------------------------------------------------------------------*/
|
||||
#define float32_default_nan 0xFFC00000
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the single-precision floating-point value `a' is a NaN;
|
||||
otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the single-precision floating-point value `a' is a NaN;
|
||||
| otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static flag float32_is_nan( float32 a )
|
||||
{
|
||||
|
||||
|
|
@ -100,12 +87,11 @@ static flag float32_is_nan( float32 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the single-precision floating-point value `a' is a signaling
|
||||
NaN; otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the single-precision floating-point value `a' is a signaling
|
||||
| NaN; otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
flag float32_is_signaling_nan( float32 a )
|
||||
{
|
||||
|
||||
|
|
@ -113,13 +99,12 @@ flag float32_is_signaling_nan( float32 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the single-precision floating-point NaN
|
||||
`a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the single-precision floating-point NaN
|
||||
| `a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
| exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static commonNaNT float32ToCommonNaN( float32 a )
|
||||
{
|
||||
commonNaNT z;
|
||||
|
|
@ -132,12 +117,11 @@ static commonNaNT float32ToCommonNaN( float32 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the canonical NaN `a' to the single-
|
||||
precision floating-point format.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the canonical NaN `a' to the single-
|
||||
| precision floating-point format.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float32 commonNaNToFloat32( commonNaNT a )
|
||||
{
|
||||
|
||||
|
|
@ -145,13 +129,12 @@ static float32 commonNaNToFloat32( commonNaNT a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Takes two single-precision floating-point values `a' and `b', one of which
|
||||
is a NaN, and returns the appropriate NaN result. If either `a' or `b' is a
|
||||
signaling NaN, the invalid exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Takes two single-precision floating-point values `a' and `b', one of which
|
||||
| is a NaN, and returns the appropriate NaN result. If either `a' or `b' is a
|
||||
| signaling NaN, the invalid exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float32 propagateFloat32NaN( float32 a, float32 b )
|
||||
{
|
||||
flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;
|
||||
|
|
@ -180,14 +163,17 @@ static float32 propagateFloat32NaN( float32 a, float32 b )
|
|||
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the double-precision floating-point NaN
|
||||
`a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
* float64_default_nan, float64_is_nan(), float64_is_signaling_nan()
|
||||
* have moved to softfloat.h.
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the double-precision floating-point NaN
|
||||
| `a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
| exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static commonNaNT float64ToCommonNaN( float64 a )
|
||||
{
|
||||
commonNaNT z;
|
||||
|
|
@ -200,12 +186,11 @@ static commonNaNT float64ToCommonNaN( float64 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the canonical NaN `a' to the double-
|
||||
precision floating-point format.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the canonical NaN `a' to the double-
|
||||
| precision floating-point format.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float64 commonNaNToFloat64( commonNaNT a )
|
||||
{
|
||||
|
||||
|
|
@ -216,13 +201,12 @@ static float64 commonNaNToFloat64( commonNaNT a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Takes two double-precision floating-point values `a' and `b', one of which
|
||||
is a NaN, and returns the appropriate NaN result. If either `a' or `b' is a
|
||||
signaling NaN, the invalid exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Takes two double-precision floating-point values `a' and `b', one of which
|
||||
| is a NaN, and returns the appropriate NaN result. If either `a' or `b' is a
|
||||
| signaling NaN, the invalid exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float64 propagateFloat64NaN( float64 a, float64 b )
|
||||
{
|
||||
flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;
|
||||
|
|
@ -253,22 +237,19 @@ static float64 propagateFloat64NaN( float64 a, float64 b )
|
|||
|
||||
#ifdef FLOATX80
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The pattern for a default generated extended double-precision NaN. The
|
||||
`high' and `low' values hold the most- and least-significant bits,
|
||||
respectively.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| The pattern for a default generated double-extended-precision NaN.
|
||||
| The `high' and `low' values hold the most- and least-significant bits,
|
||||
| respectively.
|
||||
*----------------------------------------------------------------------------*/
|
||||
#define floatx80_default_nan_high 0xFFFF
|
||||
#define floatx80_default_nan_low LIT64( 0xC000000000000000 )
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the extended double-precision floating-point value `a' is a
|
||||
NaN; otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the double-extended-precision floating-point value `a' is a
|
||||
| NaN; otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static flag floatx80_is_nan( floatx80 a )
|
||||
{
|
||||
|
||||
|
|
@ -276,12 +257,11 @@ static flag floatx80_is_nan( floatx80 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the extended double-precision floating-point value `a' is a
|
||||
signaling NaN; otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the double-extended-precision floating-point value `a' is a
|
||||
| signaling NaN; otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
flag floatx80_is_signaling_nan( floatx80 a )
|
||||
{
|
||||
bits64 aLow;
|
||||
|
|
@ -294,13 +274,12 @@ flag floatx80_is_signaling_nan( floatx80 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the extended double-precision floating-
|
||||
point NaN `a' to the canonical NaN format. If `a' is a signaling NaN, the
|
||||
invalid exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the double-extended-precision floating-
|
||||
| point NaN `a' to the canonical NaN format. If `a' is a signaling NaN, the
|
||||
| invalid exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static commonNaNT floatx80ToCommonNaN( floatx80 a )
|
||||
{
|
||||
commonNaNT z;
|
||||
|
|
@ -313,12 +292,11 @@ static commonNaNT floatx80ToCommonNaN( floatx80 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the canonical NaN `a' to the extended
|
||||
double-precision floating-point format.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the canonical NaN `a' to the double-
|
||||
| extended-precision floating-point format.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static floatx80 commonNaNToFloatx80( commonNaNT a )
|
||||
{
|
||||
floatx80 z;
|
||||
|
|
@ -329,13 +307,12 @@ static floatx80 commonNaNToFloatx80( commonNaNT a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Takes two extended double-precision floating-point values `a' and `b', one
|
||||
of which is a NaN, and returns the appropriate NaN result. If either `a' or
|
||||
`b' is a signaling NaN, the invalid exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Takes two double-extended-precision floating-point values `a' and `b', one
|
||||
| of which is a NaN, and returns the appropriate NaN result. If either `a' or
|
||||
| `b' is a signaling NaN, the invalid exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static floatx80 propagateFloatx80NaN( floatx80 a, floatx80 b )
|
||||
{
|
||||
flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;
|
||||
|
|
@ -368,21 +345,18 @@ static floatx80 propagateFloatx80NaN( floatx80 a, floatx80 b )
|
|||
|
||||
#ifdef FLOAT128
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The pattern for a default generated quadruple-precision NaN. The `high' and
|
||||
`low' values hold the most- and least-significant bits, respectively.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| The pattern for a default generated quadruple-precision NaN. The `high' and
|
||||
| `low' values hold the most- and least-significant bits, respectively.
|
||||
*----------------------------------------------------------------------------*/
|
||||
#define float128_default_nan_high LIT64( 0xFFFF800000000000 )
|
||||
#define float128_default_nan_low LIT64( 0x0000000000000000 )
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the quadruple-precision floating-point value `a' is a NaN;
|
||||
otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the quadruple-precision floating-point value `a' is a NaN;
|
||||
| otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
flag float128_is_nan( float128 a )
|
||||
{
|
||||
|
||||
|
|
@ -392,12 +366,11 @@ flag float128_is_nan( float128 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns 1 if the quadruple-precision floating-point value `a' is a
|
||||
signaling NaN; otherwise returns 0.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the quadruple-precision floating-point value `a' is a
|
||||
| signaling NaN; otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
flag float128_is_signaling_nan( float128 a )
|
||||
{
|
||||
|
||||
|
|
@ -407,13 +380,12 @@ flag float128_is_signaling_nan( float128 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the quadruple-precision floating-point NaN
|
||||
`a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the quadruple-precision floating-point NaN
|
||||
| `a' to the canonical NaN format. If `a' is a signaling NaN, the invalid
|
||||
| exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static commonNaNT float128ToCommonNaN( float128 a )
|
||||
{
|
||||
commonNaNT z;
|
||||
|
|
@ -425,12 +397,11 @@ static commonNaNT float128ToCommonNaN( float128 a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Returns the result of converting the canonical NaN `a' to the quadruple-
|
||||
precision floating-point format.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns the result of converting the canonical NaN `a' to the quadruple-
|
||||
| precision floating-point format.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float128 commonNaNToFloat128( commonNaNT a )
|
||||
{
|
||||
float128 z;
|
||||
|
|
@ -441,13 +412,12 @@ static float128 commonNaNToFloat128( commonNaNT a )
|
|||
|
||||
}
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Takes two quadruple-precision floating-point values `a' and `b', one of
|
||||
which is a NaN, and returns the appropriate NaN result. If either `a' or
|
||||
`b' is a signaling NaN, the invalid exception is raised.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Takes two quadruple-precision floating-point values `a' and `b', one of
|
||||
| which is a NaN, and returns the appropriate NaN result. If either `a' or
|
||||
| `b' is a signaling NaN, the invalid exception is raised.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static float128 propagateFloat128NaN( float128 a, float128 b )
|
||||
{
|
||||
flag aIsNaN, aIsSignalingNaN, bIsNaN, bIsSignalingNaN;
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: softfloat.h,v 1.5 2017/12/31 11:43:42 martin Exp $ */
|
||||
/* $NetBSD: softfloat.h,v 1.6 2020/09/02 03:41:56 thorpej Exp $ */
|
||||
|
||||
/* This is a derivative work. */
|
||||
|
||||
|
|
@ -31,35 +31,29 @@
|
|||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
===============================================================================
|
||||
/*============================================================================
|
||||
|
||||
This C header file is part of the SoftFloat IEC/IEEE Floating-point
|
||||
Arithmetic Package, Release 2a.
|
||||
This C header file template is part of the Berkeley SoftFloat IEEE Floating-
|
||||
Point Arithmetic Package, Release 2c, by John R. Hauser.
|
||||
|
||||
Written by John R. Hauser. This work was made possible in part by the
|
||||
International Computer Science Institute, located at Suite 600, 1947 Center
|
||||
Street, Berkeley, California 94704. Funding was partially provided by the
|
||||
National Science Foundation under grant MIP-9311980. The original version
|
||||
of this code was written as part of a project to build a fixed-point vector
|
||||
processor in collaboration with the University of California at Berkeley,
|
||||
overseen by Profs. Nelson Morgan and John Wawrzynek. More information
|
||||
is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
|
||||
arithmetic/SoftFloat.html'.
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has
|
||||
been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES
|
||||
RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS
|
||||
AND ORGANIZATIONS WHO CAN AND WILL TOLERATE ALL LOSSES, COSTS, OR OTHER
|
||||
PROBLEMS THEY INCUR DUE TO THE SOFTWARE WITHOUT RECOMPENSE FROM JOHN HAUSER OR
|
||||
THE INTERNATIONAL COMPUTER SCIENCE INSTITUTE, AND WHO FURTHERMORE EFFECTIVELY
|
||||
INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE INSTITUTE
|
||||
(possibly via similar legal notice) AGAINST ALL LOSSES, COSTS, OR OTHER
|
||||
PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE, OR
|
||||
INCURRED BY ANYONE DUE TO A DERIVATIVE WORK THEY CREATE USING ANY PART OF THE
|
||||
SOFTWARE.
|
||||
|
||||
THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
|
||||
has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
|
||||
TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
|
||||
PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
|
||||
AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
|
||||
Derivative works require also that (1) the source code for the derivative work
|
||||
includes prominent notice that the work is derivative, and (2) the source code
|
||||
includes prominent notice of these three paragraphs for those parts of this
|
||||
code that are retained.
|
||||
|
||||
Derivative works are acceptable, even for commercial purposes, so long as
|
||||
(1) they include prominent notice that the work is derivative, and (2) they
|
||||
include prominent notice akin to these four paragraphs for those parts of
|
||||
this code that are retained.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
=============================================================================*/
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
|
|
@ -72,23 +66,19 @@ this code that are retained.
|
|||
#endif
|
||||
#include <sys/endian.h>
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
The macro `FLOATX80' must be defined to enable the extended double-precision
|
||||
floating-point format `floatx80'. If this macro is not defined, the
|
||||
`floatx80' type will not be defined, and none of the functions that either
|
||||
input or output the `floatx80' type will be defined. The same applies to
|
||||
the `FLOAT128' macro and the quadruple-precision format `float128'.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| The macro `FLOATX80' must be defined to enable the double-extended-precision
|
||||
| floating-point format `floatx80'. If this macro is not defined, the
|
||||
| `floatx80' type will not be defined, and none of the functions that either
|
||||
| input or output the `floatx80' type will be defined. The same applies to
|
||||
| the `FLOAT128' macro and the quadruple-precision format `float128'.
|
||||
*----------------------------------------------------------------------------*/
|
||||
/* #define FLOATX80 */
|
||||
/* #define FLOAT128 */
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point types.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE floating-point types.
|
||||
*----------------------------------------------------------------------------*/
|
||||
typedef u_int32_t float32;
|
||||
typedef u_int64_t float64;
|
||||
#ifdef FLOATX80
|
||||
|
|
@ -116,24 +106,18 @@ typedef struct {
|
|||
|
||||
#define float_rounding_mode() fpgetround()
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point underflow tininess-detection mode.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE floating-point underflow tininess-detection mode.
|
||||
*----------------------------------------------------------------------------*/
|
||||
extern int float_detect_tininess;
|
||||
enum {
|
||||
float_tininess_after_rounding = 1,
|
||||
float_tininess_before_rounding = 0
|
||||
};
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point rounding mode.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE floating-point rounding mode.
|
||||
*----------------------------------------------------------------------------*/
|
||||
enum {
|
||||
float_round_nearest_even = FP_RN,
|
||||
float_round_to_zero = FP_RZ,
|
||||
|
|
@ -141,12 +125,9 @@ enum {
|
|||
float_round_up = FP_RP
|
||||
};
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE floating-point exception flags.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE floating-point exception flags.
|
||||
*----------------------------------------------------------------------------*/
|
||||
enum {
|
||||
float_flag_inexact = FP_X_IMP,
|
||||
float_flag_underflow = FP_X_UFL,
|
||||
|
|
@ -155,11 +136,21 @@ enum {
|
|||
float_flag_invalid = FP_X_INV
|
||||
};
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Routine to raise any or all of the software IEEE floating-point exception
|
||||
| flags.
|
||||
*----------------------------------------------------------------------------*/
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE integer-to-floating-point conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
* Routines provided by <machine/ieeefp.h>:
|
||||
*
|
||||
* float_raise()
|
||||
* float_set_inexact()
|
||||
* float_set_invalid()
|
||||
*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE integer-to-floating-point conversion routines.
|
||||
*----------------------------------------------------------------------------*/
|
||||
float32 int32_to_float32( int );
|
||||
float64 int32_to_float64( int );
|
||||
#ifdef FLOATX80
|
||||
|
|
@ -179,11 +170,9 @@ float128 int64_to_float128( int64_t );
|
|||
#endif
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE single-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE single-precision conversion routines.
|
||||
*----------------------------------------------------------------------------*/
|
||||
int float32_to_int32( float32 );
|
||||
int float32_to_int32_round_to_zero( float32 );
|
||||
#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
|
||||
|
|
@ -198,11 +187,9 @@ floatx80 float32_to_floatx80( float32 );
|
|||
float128 float32_to_float128( float32 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE single-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE single-precision operations.
|
||||
*----------------------------------------------------------------------------*/
|
||||
float32 float32_round_to_int( float32 );
|
||||
float32 float32_add( float32, float32 );
|
||||
float32 float32_sub( float32, float32 );
|
||||
|
|
@ -220,11 +207,9 @@ int float32_lt_quiet( float32, float32 );
|
|||
int float32_is_signaling_nan( float32 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE double-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE double-precision conversion routines.
|
||||
*----------------------------------------------------------------------------*/
|
||||
int float64_to_int32( float64 );
|
||||
int float64_to_int32_round_to_zero( float64 );
|
||||
#ifndef SOFTFLOAT_FOR_GCC /* __fix?fdi provided by libgcc2.c */
|
||||
|
|
@ -240,19 +225,31 @@ floatx80 float64_to_floatx80( float64 );
|
|||
float128 float64_to_float128( float64 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE double-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE double-precision operations.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| The pattern for a default generated double-precision NaN.
|
||||
*----------------------------------------------------------------------------*/
|
||||
#define float64_default_nan 0xFFF8000000000000LL
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the double-precision floating-point value `a' is a NaN;
|
||||
| otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static __inline int
|
||||
float64_is_nan(float64 a)
|
||||
{
|
||||
return 0xFFE0000000000000LL < a << 1;
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------
|
||||
| Returns 1 if the double-precision floating-point value `a' is a signaling
|
||||
| NaN; otherwise returns 0.
|
||||
*----------------------------------------------------------------------------*/
|
||||
|
||||
static __inline int
|
||||
float64_is_signaling_nan(float64 a)
|
||||
{
|
||||
|
|
@ -278,11 +275,9 @@ int float64_is_signaling_nan( float64 );
|
|||
|
||||
#ifdef FLOATX80
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE double-extended-precision conversion routines.
|
||||
*----------------------------------------------------------------------------*/
|
||||
int floatx80_to_int32( floatx80 );
|
||||
int floatx80_to_int32_round_to_zero( floatx80 );
|
||||
int64_t floatx80_to_int64( floatx80 );
|
||||
|
|
@ -293,19 +288,15 @@ float64 floatx80_to_float64( floatx80 );
|
|||
float128 floatx80_to_float128( floatx80 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision rounding precision. Valid
|
||||
values are 32, 64, and 80.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE double-extended-precision rounding precision. Valid values
|
||||
| are 32, 64, and 80.
|
||||
*----------------------------------------------------------------------------*/
|
||||
extern int floatx80_rounding_precision;
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE extended double-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE double-extended-precision operations.
|
||||
*----------------------------------------------------------------------------*/
|
||||
floatx80 floatx80_round_to_int( floatx80 );
|
||||
floatx80 floatx80_add( floatx80, floatx80 );
|
||||
floatx80 floatx80_sub( floatx80, floatx80 );
|
||||
|
|
@ -325,11 +316,9 @@ int floatx80_is_signaling_nan( floatx80 );
|
|||
|
||||
#ifdef FLOAT128
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE quadruple-precision conversion routines.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE quadruple-precision conversion routines.
|
||||
*----------------------------------------------------------------------------*/
|
||||
int float128_to_int32( float128 );
|
||||
int float128_to_int32_round_to_zero( float128 );
|
||||
int64_t float128_to_int64( float128 );
|
||||
|
|
@ -340,11 +329,9 @@ float64 float128_to_float64( float128 );
|
|||
floatx80 float128_to_floatx80( float128 );
|
||||
#endif
|
||||
|
||||
/*
|
||||
-------------------------------------------------------------------------------
|
||||
Software IEC/IEEE quadruple-precision operations.
|
||||
-------------------------------------------------------------------------------
|
||||
*/
|
||||
/*----------------------------------------------------------------------------
|
||||
| Software IEEE quadruple-precision operations.
|
||||
*----------------------------------------------------------------------------*/
|
||||
float128 float128_round_to_int( float128 );
|
||||
float128 float128_add( float128, float128 );
|
||||
float128 float128_sub( float128, float128 );
|
||||
|
|
|
|||
Loading…
Reference in New Issue