diff options
Diffstat (limited to 'math/math_config.h')
| -rw-r--r-- | math/math_config.h | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/math/math_config.h b/math/math_config.h index 7ffc0cd2796a..faf77b31fc99 100644 --- a/math/math_config.h +++ b/math/math_config.h @@ -1,7 +1,7 @@ /* * Configuration for math routines. * - * Copyright (c) 2017-2020, Arm Limited. + * Copyright (c) 2017-2023, Arm Limited. * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception */ @@ -92,6 +92,46 @@ # define unlikely(x) (x) #endif +/* Return ptr but hide its value from the compiler so accesses through it + cannot be optimized based on the contents. */ +#define ptr_barrier(ptr) \ + ({ \ + __typeof (ptr) __ptr = (ptr); \ + __asm("" : "+r"(__ptr)); \ + __ptr; \ + }) + +/* Symbol renames to avoid libc conflicts. */ +#define __math_oflowf arm_math_oflowf +#define __math_uflowf arm_math_uflowf +#define __math_may_uflowf arm_math_may_uflowf +#define __math_divzerof arm_math_divzerof +#define __math_oflow arm_math_oflow +#define __math_uflow arm_math_uflow +#define __math_may_uflow arm_math_may_uflow +#define __math_divzero arm_math_divzero +#define __math_invalidf arm_math_invalidf +#define __math_invalid arm_math_invalid +#define __math_check_oflow arm_math_check_oflow +#define __math_check_uflow arm_math_check_uflow +#define __math_check_oflowf arm_math_check_oflowf +#define __math_check_uflowf arm_math_check_uflowf + +#define __sincosf_table arm_math_sincosf_table +#define __inv_pio4 arm_math_inv_pio4 +#define __exp2f_data arm_math_exp2f_data +#define __logf_data arm_math_logf_data +#define __log2f_data arm_math_log2f_data +#define __powf_log2_data arm_math_powf_log2_data +#define __exp_data arm_math_exp_data +#define __log_data arm_math_log_data +#define __log2_data arm_math_log2_data +#define __pow_log_data arm_math_pow_log_data +#define __erff_data arm_math_erff_data +#define __erf_data arm_math_erf_data +#define __v_exp_data arm_math_v_exp_data +#define __v_log_data arm_math_v_log_data + #if HAVE_FAST_ROUND /* When set, the roundtoint and converttoint functions are provided with the semantics documented below. */ @@ -381,15 +421,22 @@ extern const struct powf_log2_data #define EXP_USE_TOINT_NARROW 0 #define EXP2_POLY_ORDER 5 #define EXP2_POLY_WIDE 0 +/* Wider exp10 polynomial necessary for good precision in non-nearest rounding + and !TOINT_INTRINSICS. */ +#define EXP10_POLY_WIDE 0 extern const struct exp_data { double invln2N; + double invlog10_2N; double shift; double negln2hiN; double negln2loN; + double neglog10_2hiN; + double neglog10_2loN; double poly[4]; /* Last four coefficients. */ double exp2_shift; double exp2_poly[EXP2_POLY_ORDER]; + double exp10_poly[5]; uint64_t tab[2*(1 << EXP_TABLE_BITS)]; } __exp_data HIDDEN; @@ -459,4 +506,16 @@ extern const struct erf_data double erfc_poly_F[ERFC_POLY_F_NCOEFFS]; } __erf_data HIDDEN; +#define V_EXP_TABLE_BITS 7 +extern const uint64_t __v_exp_data[1 << V_EXP_TABLE_BITS] HIDDEN; + +#define V_LOG_TABLE_BITS 7 +extern const struct v_log_data +{ + struct + { + double invc, logc; + } table[1 << V_LOG_TABLE_BITS]; +} __v_log_data HIDDEN; + #endif |