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151 lines
5.1 KiB
C
151 lines
5.1 KiB
C
/***********************************************************************************/
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/** MIT License **/
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/** ----------- **/
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/** **/
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/** Copyright (c) 2002-2019 Advanced Micro Devices, Inc. **/
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/** **/
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/** Permission is hereby granted, free of charge, to any person obtaining a copy **/
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/** of this Software and associated documentaon files (the "Software"), to deal **/
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/** in the Software without restriction, including without limitation the rights **/
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/** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell **/
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/** copies of the Software, and to permit persons to whom the Software is **/
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/** furnished to do so, subject to the following conditions: **/
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/** **/
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/** The above copyright notice and this permission notice shall be included in **/
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/** all copies or substantial portions of the Software. **/
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/** **/
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/** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR **/
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/** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, **/
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/** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE **/
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/** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER **/
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/** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, **/
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/** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN **/
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/** THE SOFTWARE. **/
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/***********************************************************************************/
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#ifndef LIBM_UTIL_AMD_H_INCLUDED
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#define LIBM_UTIL_AMD_H_INCLUDED 1
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#define inline __inline
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#include <emmintrin.h>
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#include <float.h>
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#define MULTIPLIER_SP 24
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#define MULTIPLIER_DP 53
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static const double VAL_2PMULTIPLIER_DP = 9007199254740992.0;
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static const double VAL_2PMMULTIPLIER_DP = 1.1102230246251565404236316680908e-16;
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static const float VAL_2PMULTIPLIER_SP = 16777216.0F;
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static const float VAL_2PMMULTIPLIER_SP = 5.9604645e-8F;
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/* Definitions for double functions on 64 bit machines */
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#define SIGNBIT_DP64 0x8000000000000000
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#define EXPBITS_DP64 0x7ff0000000000000
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#define MANTBITS_DP64 0x000fffffffffffff
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#define ONEEXPBITS_DP64 0x3ff0000000000000
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#define TWOEXPBITS_DP64 0x4000000000000000
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#define HALFEXPBITS_DP64 0x3fe0000000000000
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#define IMPBIT_DP64 0x0010000000000000
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#define QNANBITPATT_DP64 0x7ff8000000000000
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#define INDEFBITPATT_DP64 0xfff8000000000000
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#define PINFBITPATT_DP64 0x7ff0000000000000
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#define NINFBITPATT_DP64 0xfff0000000000000
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#define EXPBIAS_DP64 1023
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#define EXPSHIFTBITS_DP64 52
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#define BIASEDEMIN_DP64 1
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#define EMIN_DP64 -1022
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#define BIASEDEMAX_DP64 2046
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#define EMAX_DP64 1023
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#define LAMBDA_DP64 1.0e300
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#define MANTLENGTH_DP64 53
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#define BASEDIGITS_DP64 15
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/* These definitions, used by float functions,
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are for both 32 and 64 bit machines */
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#define SIGNBIT_SP32 0x80000000
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#define EXPBITS_SP32 0x7f800000
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#define MANTBITS_SP32 0x007fffff
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#define ONEEXPBITS_SP32 0x3f800000
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#define TWOEXPBITS_SP32 0x40000000
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#define HALFEXPBITS_SP32 0x3f000000
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#define IMPBIT_SP32 0x00800000
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#define QNANBITPATT_SP32 0x7fc00000
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#define INDEFBITPATT_SP32 0xffc00000
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#define PINFBITPATT_SP32 0x7f800000
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#define NINFBITPATT_SP32 0xff800000
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#define EXPBIAS_SP32 127
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#define EXPSHIFTBITS_SP32 23
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#define BIASEDEMIN_SP32 1
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#define EMIN_SP32 -126
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#define BIASEDEMAX_SP32 254
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#define EMAX_SP32 127
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#define LAMBDA_SP32 1.0e30
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#define MANTLENGTH_SP32 24
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#define BASEDIGITS_SP32 7
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#define CLASS_SIGNALLING_NAN 1
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#define CLASS_QUIET_NAN 2
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#define CLASS_NEGATIVE_INFINITY 3
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#define CLASS_NEGATIVE_NORMAL_NONZERO 4
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#define CLASS_NEGATIVE_DENORMAL 5
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#define CLASS_NEGATIVE_ZERO 6
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#define CLASS_POSITIVE_ZERO 7
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#define CLASS_POSITIVE_DENORMAL 8
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#define CLASS_POSITIVE_NORMAL_NONZERO 9
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#define CLASS_POSITIVE_INFINITY 10
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#define OLD_BITS_SP32(x) (*((unsigned int *)&x))
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#define OLD_BITS_DP64(x) (*((unsigned long long *)&x))
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/* Alternatives to the above functions which don't have
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problems when using high optimization levels on gcc */
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#define GET_BITS_SP32(x, ux) \
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{ \
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volatile union {float f; unsigned int i;} _bitsy; \
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_bitsy.f = (x); \
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ux = _bitsy.i; \
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}
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#define PUT_BITS_SP32(ux, x) \
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{ \
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volatile union {float f; unsigned int i;} _bitsy; \
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_bitsy.i = (ux); \
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x = _bitsy.f; \
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}
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#define GET_BITS_DP64(x, ux) \
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{ \
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volatile union {double d; unsigned long long i;} _bitsy; \
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_bitsy.d = (x); \
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ux = _bitsy.i; \
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}
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#define PUT_BITS_DP64(ux, x) \
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{ \
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volatile union {double d; unsigned long long i;} _bitsy; \
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_bitsy.i = (ux); \
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x = _bitsy.d; \
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}
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/* Processor-dependent floating-point status flags */
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#define AMD_F_OVERFLOW 0x00000001
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#define AMD_F_UNDERFLOW 0x00000002
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#define AMD_F_DIVBYZERO 0x00000004
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#define AMD_F_INVALID 0x00000008
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#define AMD_F_INEXACT 0x00000010
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/* Processor-dependent floating-point precision-control flags */
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#define AMD_F_EXTENDED 0x00000300
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#define AMD_F_DOUBLE 0x00000200
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#define AMD_F_SINGLE 0x00000000
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/* Processor-dependent floating-point rounding-control flags */
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#define AMD_F_RC_NEAREST 0x00000000
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#define AMD_F_RC_DOWN 0x00002000
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#define AMD_F_RC_UP 0x00004000
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#define AMD_F_RC_ZERO 0x00006000
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#endif /* LIBM_UTIL_AMD_H_INCLUDED */
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