* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
This patch is a complete rewrite of sincosf. The new version is significantly faster, as well as simple and accurate. The worst-case ULP is 0.5607, maximum relative error is 0.5303 * 2^-23 over all 4 billion inputs. In non-nearest rounding modes the error is 1ULP. The algorithm uses 3 main cases: small inputs which don't need argument reduction, small inputs which need a simple range reduction and large inputs requiring complex range reduction. The code uses approximate integer comparisons to quickly decide between these cases. The small range reducer uses a single reduction step to handle values up to 120.0. It is fastest on targets which support inlined round instructions. The large range reducer uses integer arithmetic for simplicity. It does a 32x96 bit multiply to compute a 64-bit modulo result. This is more than accurate enough to handle the worst-case cancellation for values close to an integer multiple of PI/4. It could be further optimized, however it is already much faster than necessary. sincosf throughput gains on Cortex-A72: * |x| < 0x1p-12 : 1.6x * |x| < M_PI_4 : 1.7x * |x| < 2 * M_PI: 1.5x * |x| < 120.0 : 1.8x * |x| < Inf : 2.3x * math/Makefile: Add s_sincosf_data.c. * sysdeps/ia64/fpu/s_sincosf_data.c: New file. * sysdeps/ieee754/flt-32/s_sincosf.h (abstop12): Add new function. (sincosf_poly): Likewise. (reduce_small): Likewise. (reduce_large): Likewise. * sysdeps/ieee754/flt-32/s_sincosf.c (sincosf): Rewrite. * sysdeps/ieee754/flt-32/s_sincosf_data.c: New file with sincosf data. * sysdeps/m68k/m680x0/fpu/s_sincosf_data.c: New file. * sysdeps/x86_64/fpu/s_sincosf_data.c: New file.
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
This implementation is based on generic s_sinf.c and s_cosf.c. Tested on s390x, powerpc64le and powerpc32.
This patch makes flt-32 libm functions use libm_alias_float to define public interfaces (in cases where _Float32 aliases of those interfaces would be appropriate, so not for finitef / isinff / isnanf). Tested for x86_64. Also tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/ieee754/flt-32/s_asinhf.c: Include <libm-alias-float.h>. (asinhf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_atanf.c: Include <libm-alias-float.h>. (atanf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_cbrtf.c: Include <libm-alias-float.h>. (cbrtf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_ceilf.c: Include <libm-alias-float.h>. (ceilf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_copysignf.c: Include <libm-alias-float.h>. (copysignf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_cosf.c: Include <libm-alias-float.h>. (cosf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_erff.c: Include <libm-alias-float.h>. (erff): Define using libm_alias_float. (erfcf): Likewise. * sysdeps/ieee754/flt-32/s_expm1f.c: Include <libm-alias-float.h>. (expm1f): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_fabsf.c: Include <libm-alias-float.h>. (fabsf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_floorf.c: Include <libm-alias-float.h>. (floorf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_frexpf.c: Include <libm-alias-float.h>. (frexpf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_fromfpf.c (fromfpf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_fromfpf_main.c: Include <libm-alias-float.h>. * sysdeps/ieee754/flt-32/s_fromfpxf.c (fromfpxf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_getpayloadf.c: Include <libm-alias-float.h>. (getpayloadf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_llrintf.c: Include <libm-alias-float.h>. (llrintf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_llroundf.c: Include <libm-alias-float.h>. (llroundf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_logbf.c: Include <libm-alias-float.h>. (logbf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_lrintf.c: Include <libm-alias-float.h>. (lrintf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_lroundf.c: Include <libm-alias-float.h>. (lroundf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_modff.c: Include <libm-alias-float.h>. (modff): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_nearbyintf.c: Include <libm-alias-float.h>. (nearbyintf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_nextafterf.c: Include <libm-alias-float.h>. (nextafterf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_nextupf.c: Include <libm-alias-float.h>. (nextupf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_remquof.c: Include <libm-alias-float.h>. (remquof): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_rintf.c: Include <libm-alias-float.h>. (rintf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_roundevenf.c: Include <libm-alias-float.h>. (roundevenf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_roundf.c: Include <libm-alias-float.h>. (roundf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_setpayloadf.c (setpayloadf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Include <libm-alias-float.h>. * sysdeps/ieee754/flt-32/s_setpayloadsigf.c (setpayloadsigf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_sincosf.c: Include <libm-alias-float.h>. (sincosf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_sinf.c: Include <libm-alias-float.h>. (sinf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_tanf.c: Include <libm-alias-float.h>. (tanf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_tanhf.c: Include <libm-alias-float.h>. (tanhf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_totalorderf.c: Include <libm-alias-float.h>. (totalorderf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_totalordermagf.c: Include <libm-alias-float.h>. (totalordermagf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_truncf.c: Include <libm-alias-float.h>. (truncf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_ufromfpf.c (ufromfpf): Define using libm_alias_float. * sysdeps/ieee754/flt-32/s_ufromfpxf.c (ufromfpxf): Define using libm_alias_float.
This patch makes sincos set errno to EDOM when passed an infinity, similarly to sin and cos. Tested for x86_64, x86, powerpc and mips64. I don't know if the architecture-specific implementations for ia64 and m68k might need corresponding fixes. 2015-02-11 Joseph Myers <joseph@codesourcery.com> [BZ #15467] * sysdeps/ieee754/dbl-64/s_sincos.c: Include <errno.h>. (__sincos): Set errno to EDOM for infinite argument. * sysdeps/ieee754/flt-32/s_sincosf.c: Include <errno.h>. (SINCOSF_FUNC): Set errno to EDOM for infinite argument. * sysdeps/ieee754/ldbl-128/s_sincosl.c: Include <errno.h>. (__sincosl): Set errno to EDOM for infinite argument. * sysdeps/ieee754/ldbl-128ibm/s_sincosl.c: Include <errno.h>. (__sincosl): Set errno to EDOM for infinite argument. * sysdeps/ieee754/ldbl-96/s_sincosl.c: Include <errno.h>. (__sincosl): Set errno to EDOM for infinite argument. * math/libm-test.inc (sincos_test_data): Test errno setting.