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875c76c704
glibc/sysdeps/ieee754/flt-32
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Szabolcs Nagy 875c76c704 New generic log2f 
Similar to the new logf: double precision arithmetics and a small
lookup table is used. The argument reduction step is the same as in
the new logf.

without wrapper on aarch64:
log2f reciprocal-throughput: 2.3x faster
log2f latency: 2.1x faster
old worst case error: 1.72 ulp
new worst case error: 0.75 ulp
aarch64 .text size: -252 bytes
aarch64 .rodata size: +244 bytes

	* math/Makefile (type-float-routines): Add e_log2f_data.
	* sysdeps/ieee754/flt-32/e_log2f.c: New implementation.
	* sysdeps/ieee754/flt-32/e_log2f_data.c: New file.
	* sysdeps/ieee754/flt-32/math_config.h (__log2f_data): Define.
	(LOG2F_TABLE_BITS, LOG2F_POLY_ORDER): Define.
	* sysdeps/i386/fpu/e_log2f_data.c: New file.
	* sysdeps/ia64/fpu/e_log2f_data.c: New file.
	* sysdeps/m68k/m680x0/fpu/e_log2f_data.c: New file.
2017-09-29 17:17:41 +01:00
..
e_acosf.c
e_acoshf.c
e_asinf.c
e_atan2f.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_atanhf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_coshf.c
e_exp2f_data.c Optimized generic expf and exp2f with wrappers 2017-09-25 10:44:39 +01:00
e_exp2f.c Optimized generic expf and exp2f with wrappers 2017-09-25 10:44:39 +01:00
e_expf.c Optimized generic expf and exp2f with wrappers 2017-09-25 10:44:39 +01:00
e_fmodf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_gammaf_r.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_hypotf.c Fix hypot sNaN handling (bug 20940). 2016-12-07 01:16:36 +00:00
e_ilogbf.c
e_j0f.c Fix y0 and y1 exception handling for zero input [BZ #21134] 2017-02-15 10:30:59 -02:00
e_j1f.c Fix y0 and y1 exception handling for zero input [BZ #21134] 2017-02-15 10:30:59 -02:00
e_jnf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_lgammaf_r.c Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
e_log2f_data.c New generic log2f 2017-09-29 17:17:41 +01:00
e_log2f.c New generic log2f 2017-09-29 17:17:41 +01:00
e_log10f.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_logf_data.c New generic logf 2017-09-29 11:46:46 +01:00
e_logf.c New generic logf 2017-09-29 11:46:46 +01:00
e_powf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_rem_pio2f.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_remainderf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
e_sinhf.c
e_sqrtf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
k_cosf.c
k_rem_pio2f.c Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
k_sinf.c
k_tanf.c
lgamma_negf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
lgamma_productf.c
math_config.h New generic log2f 2017-09-29 17:17:41 +01:00
math_errf.c Optimized generic expf and exp2f with wrappers 2017-09-25 10:44:39 +01:00
mpn2flt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_asinhf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_atanf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_cbrtf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_ceilf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_copysignf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_cosf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_erff.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_expm1f.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_fabsf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_finitef.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
s_floorf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_fpclassifyf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
s_frexpf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_fromfpf_main.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_fromfpf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_fromfpxf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_getpayloadf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_isinff.c
s_isnanf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
s_issignalingf.c Consistently use uintN_t not u_intN_t in libm. 2017-08-03 19:55:04 +00:00
s_llrintf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_llroundf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_log1pf.c
s_logbf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_lrintf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_lroundf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_modff.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_nearbyintf.c Fix nearbyint arithmetic moved before feholdexcept (bug 22225). 2017-09-28 01:59:02 +00:00
s_nextafterf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_nextupf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_remquof.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_rintf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_roundevenf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_roundf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_scalblnf.c
s_scalbnf.c
s_setpayloadf_main.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_setpayloadf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_setpayloadsigf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_signbitf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_sincosf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_sinf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_tanf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_tanhf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_totalorderf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_totalordermagf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_truncf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_ufromfpf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00
s_ufromfpxf.c Use libm_alias_float in flt-32. 2017-09-22 20:24:12 +00:00