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Diffstat (limited to 'luni/src/main/native/fltconst.h')
| -rw-r--r-- | luni/src/main/native/fltconst.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/luni/src/main/native/fltconst.h b/luni/src/main/native/fltconst.h new file mode 100644 index 0000000..03a97cd --- /dev/null +++ b/luni/src/main/native/fltconst.h @@ -0,0 +1,156 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#if !defined(fltconst_h) +#define fltconst_h + +#include "hycomp.h" + +/* IEEE floats consist of: sign bit, exponent field, significand field + single: 31 = sign bit, 30..23 = exponent (8 bits), 22..0 = significand (23 bits) + double: 63 = sign bit, 62..52 = exponent (11 bits), 51..0 = significand (52 bits) + inf == (all exponent bits set) and (all mantissa bits clear) + nan == (all exponent bits set) and (at least one mantissa bit set) + finite == (at least one exponent bit clear) + zero == (all exponent bits clear) and (all mantissa bits clear) + denormal == (all exponent bits clear) and (at least one mantissa bit set) + positive == sign bit clear + negative == sign bit set +*/ +#define MAX_U32_DOUBLE (ESDOUBLE) (4294967296.0) /* 2^32 */ +#define MAX_U32_SINGLE (ESSINGLE) (4294967296.0) /* 2^32 */ +#define HY_POS_PI (ESDOUBLE) (3.141592653589793) + +#ifdef HY_LITTLE_ENDIAN +#ifdef HY_PLATFORM_DOUBLE_ORDER +#define DOUBLE_LO_OFFSET 0 +#define DOUBLE_HI_OFFSET 1 +#else +#define DOUBLE_LO_OFFSET 1 +#define DOUBLE_HI_OFFSET 0 +#endif +#define LONG_LO_OFFSET 0 +#define LONG_HI_OFFSET 1 +#else +#ifdef HY_PLATFORM_DOUBLE_ORDER +#define DOUBLE_LO_OFFSET 1 +#define DOUBLE_HI_OFFSET 0 +#else +#define DOUBLE_LO_OFFSET 0 +#define DOUBLE_HI_OFFSET 1 +#endif +#define LONG_LO_OFFSET 1 +#define LONG_HI_OFFSET 0 +#endif + +#define RETURN_FINITE 0 +#define RETURN_NAN 1 +#define RETURN_POS_INF 2 +#define RETURN_NEG_INF 3 +#define DOUBLE_SIGN_MASK_HI 0x80000000 +#define DOUBLE_EXPONENT_MASK_HI 0x7FF00000 +#define DOUBLE_MANTISSA_MASK_LO 0xFFFFFFFF +#define DOUBLE_MANTISSA_MASK_HI 0x000FFFFF +#define SINGLE_SIGN_MASK 0x80000000 +#define SINGLE_EXPONENT_MASK 0x7F800000 +#define SINGLE_MANTISSA_MASK 0x007FFFFF +#define SINGLE_NAN_BITS (SINGLE_EXPONENT_MASK | 0x00400000) + +typedef union u64u32dbl_tag { + U_64 u64val; + U_32 u32val[2]; + I_32 i32val[2]; + double dval; +} U64U32DBL; + +/* Replace P_FLOAT_HI and P_FLOAT_LOW */ +/* These macros are used to access the high and low 32-bit parts of a double (64-bit) value. */ +#define LOW_U32_FROM_DBL_PTR(dblptr) (((U64U32DBL *)(dblptr))->u32val[DOUBLE_LO_OFFSET]) +#define HIGH_U32_FROM_DBL_PTR(dblptr) (((U64U32DBL *)(dblptr))->u32val[DOUBLE_HI_OFFSET]) +#define LOW_I32_FROM_DBL_PTR(dblptr) (((U64U32DBL *)(dblptr))->i32val[DOUBLE_LO_OFFSET]) +#define HIGH_I32_FROM_DBL_PTR(dblptr) (((U64U32DBL *)(dblptr))->i32val[DOUBLE_HI_OFFSET]) +#define LOW_U32_FROM_DBL(dbl) LOW_U32_FROM_DBL_PTR(&(dbl)) +#define HIGH_U32_FROM_DBL(dbl) HIGH_U32_FROM_DBL_PTR(&(dbl)) +#define LOW_I32_FROM_DBL(dbl) LOW_I32_FROM_DBL_PTR(&(dbl)) +#define HIGH_I32_FROM_DBL(dbl) HIGH_I32_FROM_DBL_PTR(&(dbl)) +#define LOW_U32_FROM_LONG64_PTR(long64ptr) (((U64U32DBL *)(long64ptr))->u32val[LONG_LO_OFFSET]) +#define HIGH_U32_FROM_LONG64_PTR(long64ptr) (((U64U32DBL *)(long64ptr))->u32val[LONG_HI_OFFSET]) +#define LOW_I32_FROM_LONG64_PTR(long64ptr) (((U64U32DBL *)(long64ptr))->i32val[LONG_LO_OFFSET]) +#define HIGH_I32_FROM_LONG64_PTR(long64ptr) (((U64U32DBL *)(long64ptr))->i32val[LONG_HI_OFFSET]) +#define LOW_U32_FROM_LONG64(long64) LOW_U32_FROM_LONG64_PTR(&(long64)) +#define HIGH_U32_FROM_LONG64(long64) HIGH_U32_FROM_LONG64_PTR(&(long64)) +#define LOW_I32_FROM_LONG64(long64) LOW_I32_FROM_LONG64_PTR(&(long64)) +#define HIGH_I32_FROM_LONG64(long64) HIGH_I32_FROM_LONG64_PTR(&(long64)) +#define IS_ZERO_DBL_PTR(dblptr) ((LOW_U32_FROM_DBL_PTR(dblptr) == 0) && ((HIGH_U32_FROM_DBL_PTR(dblptr) == 0) || (HIGH_U32_FROM_DBL_PTR(dblptr) == DOUBLE_SIGN_MASK_HI))) +#define IS_ONE_DBL_PTR(dblptr) ((HIGH_U32_FROM_DBL_PTR(dblptr) == 0x3ff00000 || HIGH_U32_FROM_DBL_PTR(dblptr) == 0xbff00000) && (LOW_U32_FROM_DBL_PTR(dblptr) == 0)) +#define IS_NAN_DBL_PTR(dblptr) (((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_EXPONENT_MASK_HI) == DOUBLE_EXPONENT_MASK_HI) && (LOW_U32_FROM_DBL_PTR(dblptr) | (HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_MANTISSA_MASK_HI))) +#define IS_INF_DBL_PTR(dblptr) (((HIGH_U32_FROM_DBL_PTR(dblptr) & (DOUBLE_EXPONENT_MASK_HI|DOUBLE_MANTISSA_MASK_HI)) == DOUBLE_EXPONENT_MASK_HI) && (LOW_U32_FROM_DBL_PTR(dblptr) == 0)) +#define IS_DENORMAL_DBL_PTR(dblptr) (((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_EXPONENT_MASK_HI) == 0) && ((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_MANTISSA_MASK_HI) != 0 || (LOW_U32_FROM_DBL_PTR(dblptr) != 0))) +#define IS_FINITE_DBL_PTR(dblptr) ((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_EXPONENT_MASK_HI) < DOUBLE_EXPONENT_MASK_HI) +#define IS_POSITIVE_DBL_PTR(dblptr) ((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_SIGN_MASK_HI) == 0) +#define IS_NEGATIVE_DBL_PTR(dblptr) ((HIGH_U32_FROM_DBL_PTR(dblptr) & DOUBLE_SIGN_MASK_HI) != 0) +#define IS_NEGATIVE_MAX_DBL_PTR(dblptr) ((HIGH_U32_FROM_DBL_PTR(dblptr) == 0xFFEFFFFF) && (LOW_U32_FROM_DBL_PTR(dblptr) == 0xFFFFFFFF)) +#define IS_ZERO_DBL(dbl) IS_ZERO_DBL_PTR(&(dbl)) +#define IS_ONE_DBL(dbl) IS_ONE_DBL_PTR(&(dbl)) +#define IS_NAN_DBL(dbl) IS_NAN_DBL_PTR(&(dbl)) +#define IS_INF_DBL(dbl) IS_INF_DBL_PTR(&(dbl)) +#define IS_DENORMAL_DBL(dbl) IS_DENORMAL_DBL_PTR(&(dbl)) +#define IS_FINITE_DBL(dbl) IS_FINITE_DBL_PTR(&(dbl)) +#define IS_POSITIVE_DBL(dbl) IS_POSITIVE_DBL_PTR(&(dbl)) +#define IS_NEGATIVE_DBL(dbl) IS_NEGATIVE_DBL_PTR(&(dbl)) +#define IS_NEGATIVE_MAX_DBL(dbl) IS_NEGATIVE_MAX_DBL_PTR(&(dbl)) +#define IS_ZERO_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)~SINGLE_SIGN_MASK) == (U_32)0) +#define IS_ONE_SNGL_PTR(fltptr) ((*U32P((fltptr)) == 0x3f800000) || (*U32P((fltptr)) == 0xbf800000)) +#define IS_NAN_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)~SINGLE_SIGN_MASK) > (U_32)SINGLE_EXPONENT_MASK) +#define IS_INF_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)~SINGLE_SIGN_MASK) == (U_32)SINGLE_EXPONENT_MASK) +#define IS_DENORMAL_SNGL_PTR(fltptr) (((*U32P((fltptr)) & (U_32)~SINGLE_SIGN_MASK)-(U_32)1) < (U_32)SINGLE_MANTISSA_MASK) +#define IS_FINITE_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)~SINGLE_SIGN_MASK) < (U_32)SINGLE_EXPONENT_MASK) +#define IS_POSITIVE_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)SINGLE_SIGN_MASK) == (U_32)0) +#define IS_NEGATIVE_SNGL_PTR(fltptr) ((*U32P((fltptr)) & (U_32)SINGLE_SIGN_MASK) != (U_32)0) +#define IS_ZERO_SNGL(flt) IS_ZERO_SNGL_PTR(&(flt)) +#define IS_ONE_SNGL(flt) IS_ONE_SNGL_PTR(&(flt)) +#define IS_NAN_SNGL(flt) IS_NAN_SNGL_PTR(&(flt)) +#define IS_INF_SNGL(flt) IS_INF_SNGL_PTR(&(flt)) +#define IS_DENORMAL_SNGL(flt) IS_DENORMAL_SNGL_PTR(&(flt)) +#define IS_FINITE_SNGL(flt) IS_FINITE_SNGL_PTR(&(flt)) +#define IS_POSITIVE_SNGL(flt) IS_POSITIVE_SNGL_PTR(&(flt)) +#define IS_NEGATIVE_SNGL(flt) IS_NEGATIVE_SNGL_PTR(&(flt)) +#define SET_NAN_DBL_PTR(dblptr) HIGH_U32_FROM_DBL_PTR(dblptr) = (DOUBLE_EXPONENT_MASK_HI | 0x00080000); LOW_U32_FROM_DBL_PTR(dblptr) = 0 +#define SET_PZERO_DBL_PTR(dblptr) HIGH_U32_FROM_DBL_PTR(dblptr) = 0; LOW_U32_FROM_DBL_PTR(dblptr) = 0 +#define SET_NZERO_DBL_PTR(dblptr) HIGH_U32_FROM_DBL_PTR(dblptr) = DOUBLE_SIGN_MASK_HI; LOW_U32_FROM_DBL_PTR(dblptr) = 0 +#define SET_PINF_DBL_PTR(dblptr) HIGH_U32_FROM_DBL_PTR(dblptr) = DOUBLE_EXPONENT_MASK_HI; LOW_U32_FROM_DBL_PTR(dblptr) = 0 +#define SET_NINF_DBL_PTR(dblptr) HIGH_U32_FROM_DBL_PTR(dblptr) = (DOUBLE_EXPONENT_MASK_HI | DOUBLE_SIGN_MASK_HI); LOW_U32_FROM_DBL_PTR(dblptr) = 0 +#define SET_NAN_SNGL_PTR(fltptr) *U32P((fltptr)) = ((U_32)SINGLE_NAN_BITS) +#define SET_PZERO_SNGL_PTR(fltptr) *U32P((fltptr)) = 0 +#define SET_NZERO_SNGL_PTR(fltptr) *U32P((fltptr)) = SINGLE_SIGN_MASK +#define SET_PINF_SNGL_PTR(fltptr) *U32P((fltptr)) = SINGLE_EXPONENT_MASK +#define SET_NINF_SNGL_PTR(fltptr) *U32P((fltptr)) = (SINGLE_EXPONENT_MASK | SINGLE_SIGN_MASK) + +/* on some platforms (HP720) we cannot reference an unaligned float. Build them by hand, one U_32 at a time. */ +#if defined(ATOMIC_FLOAT_ACCESS) +#define PTR_DOUBLE_STORE(dstPtr, aDoublePtr) HIGH_U32_FROM_DBL_PTR(dstPtr) = HIGH_U32_FROM_DBL_PTR(aDoublePtr); LOW_U32_FROM_DBL_PTR(dstPtr) = LOW_U32_FROM_DBL_PTR(aDoublePtr) +#define PTR_DOUBLE_VALUE(dstPtr, aDoublePtr) HIGH_U32_FROM_DBL_PTR(aDoublePtr) = HIGH_U32_FROM_DBL_PTR(dstPtr); LOW_U32_FROM_DBL_PTR(aDoublePtr) = LOW_U32_FROM_DBL_PTR(dstPtr) +#else +#define PTR_DOUBLE_STORE(dstPtr, aDoublePtr) (*(dstPtr) = *(aDoublePtr)) +#define PTR_DOUBLE_VALUE(dstPtr, aDoublePtr) (*(aDoublePtr) = *(dstPtr)) +#endif + +#define STORE_LONG(dstPtr, hi, lo) HIGH_U32_FROM_LONG64_PTR(dstPtr) = (hi); LOW_U32_FROM_LONG64_PTR(dstPtr) = (lo) +#define PTR_SINGLE_VALUE(dstPtr, aSinglePtr) (*U32P(aSinglePtr) = *U32P(dstPtr)) +#define PTR_SINGLE_STORE(dstPtr, aSinglePtr) *((U_32 *)(dstPtr)) = (*U32P(aSinglePtr)) + +#endif /* fltconst_h */ |