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2025-05-27AVR: target/120442 - Support f7_fdim / fdiml in LibF7.Georg-Johann Lay1-0/+15
Add Support for fdiml. PR target/120442 libgcc/config/avr/libf7/ * libf7-common.mk (LIBF_C_PARTS, m_ddd): Add fdim. * libf7.h (f7_fdim): New proto. * libf7.c (f7_fdim): New function. * f7renames.sh (f7_fdim): Add rename. * f7-wraps.h: Rebuild * f7-renames.h: Rebuild
2025-05-27AVR: target/120441 - Fix f7_exp for |x| ≥ 512.Georg-Johann Lay1-2/+2
f7_exp limited exponents to 512, but 1023 * ln2 ≈ 709, hence 1024 is a correct limit. libgcc/config/avr/libf7/ PR target/120441 * libf7.c (f7_exp): Limit aa->expo to 10 (not to 9).
2025-01-02Update copyright years.Jakub Jelinek1-1/+1
2024-06-14AVR: target/115419 - Tie breaks are rounded-to-even.Georg-Johann Lay1-5/+15
libgcc/config/avr/libf7/ PR target/115419 * libf7.c (f7_get_double): Round tie breaks to even LSB.
2024-05-08AVR: target/114981 - Support __builtin_powi[l] / __powidf2.Georg-Johann Lay1-7/+22
This supports __powidf2 by means of a double wrapper for already existing f7_powi (renamed to __f7_powi by f7-renames.h). It tweaks the implementation so that it does not perform trivial multiplications with 1.0 any more, but instead uses a move. It also fixes the last statement of f7_powi, which was wrong. Notice that f7_powi was unused until now. PR target/114981 libgcc/config/avr/libf7/ * libf7-common.mk (F7_ASM_PARTS): Add D_powi * libf7-asm.sx (F7MOD_D_powi_, __powidf2): New module and function. * libf7.c (f7_powi): Fix last (wrong) statement. Tweak trivial multiplications with 1.0. gcc/testsuite/ * gcc.target/avr/pr114981-powil.c: New test.
2024-01-03Update copyright years.Jakub Jelinek1-1/+1
2023-11-14LibF7: sinh: Fix loss of precision due to cancellation for small values.Georg-Johann Lay1-0/+17
libgcc/config/avr/libf7/ * libf7-const.def [F7MOD_sinh_]: Add MiniMax polynomial. * libf7.c (f7_sinh): Use it instead of (exp(x) - exp(-x)) / 2 when |x| < 0.5 to avoid loss of precision due to cancellation.
2023-11-12LibF7: Use paper-pencil method for sqrt instead of Newton-Raphson iteration.Georg-Johann Lay1-35/+1
libgcc/config/avr/libf7/ * libf7-asm.sx (sqrt_approx): Rewrite. * libf7.c (f7_sqrt): Use it instead of sqrt_worker. (sqrt_worker): Remove.
2023-10-12LibF7: Implement atan2.Georg-Johann Lay1-1/+59
libgcc/config/avr/libf7/ * libf7.c (F7MOD_atan2_, f7_atan2): New module and function. * libf7.h: Adjust comments. * libf7-common.mk (CALL_PROLOGUES): Add atan2.
2023-10-05LibF7: Remove uses of attribute pure.Georg-Johann Lay1-5/+5
libgcc/config/avr/libf7/ * libf7.h (F7_PURE): Remove all occurrences. * libf7.c: Same.
2023-10-05LibF7: Use monic denominator polynomials to save a multiplication.Georg-Johann Lay1-0/+3
libgcc/config/avr/libf7/ * libf7.h (F7_FLAGNO_plusx, F7_FLAG_plusx): New macros. * libf7.c (f7_horner): Handle F7_FLAG_plusx in highest coefficient. * libf7-const.def [F7MOD_atan_]: Denominator: Set F7_FLAG_plusx and omit highest term. [F7MOD_asinacos_]: Use rational function with normalized denominator.
2023-01-16Update copyright years.Jakub Jelinek1-1/+1
2022-01-03Update copyright years.Jakub Jelinek1-1/+1
2021-01-04Update copyright years.Jakub Jelinek1-1/+1
2020-01-08Implement 64-bit double functions.Georg-Johann Lay1-0/+2501
gcc/ PR target/92055 * config.gcc (tm_defines) [target=avr]: Support --with-libf7, --with-double-comparison. * doc/install.texi: Document them. * config/avr/avr-c.c (avr_cpu_cpp_builtins) <WITH_LIBF7_LIBGCC, WITH_LIBF7_MATH, WITH_LIBF7_MATH_SYMBOLS> <WITH_DOUBLE_COMPARISON>: New built-in defines. * doc/invoke.texi (AVR Built-in Macros): Document them. * config/avr/avr-protos.h (avr_float_lib_compare_returns_bool): New. * config/avr/avr.c (avr_float_lib_compare_returns_bool): New function. * config/avr/avr.h (FLOAT_LIB_COMPARE_RETURNS_BOOL): New macro. libgcc/ PR target/92055 * config.host (tmake_file) [target=avr]: Add t-libf7, t-libf7-math, t-libf7-math-symbols as specified by --with-libf7=. * config/avr/t-avrlibc: Don't copy libgcc.a if there are modules depending on sizeof (double) or sizeof (long double). * config/avr/libf7: New folder. libgcc/config/avr/libf7/ PR target/92055 * t-libf7: New file. * t-libf7-math: New file. * t-libf7-math-symbols: New file. * libf7-common.mk: New file. * libf7-asm-object.mk: New file. * libf7-c-object.mk: New file. * asm-defs.h: New file. * libf7.h: New file. * libf7.c: New file. * libf7-asm.sx: New file. * libf7-array.def: New file. * libf7-const.def: New file. * libf7-constdef.h: New file. * f7renames.sh: New script. * f7wraps.sh: New script. * f7-renames.h: New generated file. * f7-wraps.h: New generated file. From-SVN: r279994
generated by cgit v1.1 at 2025-08-09 12:53:22 +0000