mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 20:21:07 +00:00
55a38f8236
TS 18661-1 defines llogb functions that are like ilogb except that they return long int instead of int. Corresponding FP_LLOGB* macros are defined, whose values are required to have the obvious correspondence to those of the FP_ILOGB* macros. This patch implements these functions and macros for glibc. llogb uses the type-generic infrastructure, with an implementation similar to the wrapper for ilogb but with additional conversion from FP_ILOGB* to FP_LLOGB*; this approach avoids needing to modify or duplicate any of the architecture-specific ilogb implementations. Tests are also based on those for ilogb. Ideally the llogb functions would alias the ilogb ones when long is 32-bit, but such aliasing requires the associated header declarations of the different-type alias to be hidden, typically by defining macros before including the header (see e.g. how sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c defines lround to __hidden_lround before including <math.h>). The infrastructure for type-generic function implementations does not support defining such macros at present (since C code can't define a macro whose name is determined by other macros). So this patch leaves them as separate functions (similar to e.g. scalbln and scalbn being separate in such a case as well), but with the remapping of FP_ILOGB* to FP_LLOGB* conditioned out in the case where it would be the identity map. Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New declaration. * math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New macro. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__FP_LONG_MAX): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGB0): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGBNAN): Likewise. * math/Versions (llogb): New libm symbol at version GLIBC_2.25. (llogbf): Likewise. (llogbl): Likewise. * math/Makefile (gen-libm-calls): Add w_llogbF. (tests): Add test-fp-llogb-constants. * math/w_llogb_template.c: New file. Based on math/w_ilogb_template.c. * math/libm-test.inc (llogb_test_data): New array. (llogb_test): New function. (main): Call llogb_test. * math/test-fp-llogb-constants.c: New file. Based on math/test-fp-ilogb-constants.c. * math/test-tgmath-ret.c (llogb): New CHECK_RET_CONST call. (do_test): Call check_return_llogb. * math/test-tgmath.c (NCALLS): Increase to 126. (F(compile_test)): Call llogb. (F(llogb)): New function. * manual/math.texi (Exponents and Logarithms): Document llogb, llogbf, llogbl, FP_LLOGB0 and FP_LLOGBNAN. * manual/libm-err-tab.pl (@all_functions): Add llogb. * sysdeps/ieee754/ldbl-opt/nldbl-llogb.c: New file. * sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add llogb. (CFLAGS-nldbl-llogb.c): New variable. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise. |
||
|---|---|---|
| .. | ||
| configure | ||
| configure.ac | ||
| Makefile | ||
| math_ldbl_opt.c | ||
| math_ldbl_opt.h | ||
| math-type-macros-double.h | ||
| math-type-macros-ldouble.h | ||
| nldbl-acos.c | ||
| nldbl-acosh.c | ||
| nldbl-asin.c | ||
| nldbl-asinh.c | ||
| nldbl-asprintf_chk.c | ||
| nldbl-asprintf.c | ||
| nldbl-atan2.c | ||
| nldbl-atan.c | ||
| nldbl-atanh.c | ||
| nldbl-cabs.c | ||
| nldbl-cacos.c | ||
| nldbl-cacosh.c | ||
| nldbl-canonicalize.c | ||
| nldbl-carg.c | ||
| nldbl-casin.c | ||
| nldbl-casinh.c | ||
| nldbl-catan.c | ||
| nldbl-catanh.c | ||
| nldbl-cbrt.c | ||
| nldbl-ccos.c | ||
| nldbl-ccosh.c | ||
| nldbl-ceil.c | ||
| nldbl-cexp.c | ||
| nldbl-cimag.c | ||
| nldbl-clog10.c | ||
| nldbl-clog.c | ||
| nldbl-compat.c | ||
| nldbl-compat.h | ||
| nldbl-conj.c | ||
| nldbl-copysign.c | ||
| nldbl-cos.c | ||
| nldbl-cosh.c | ||
| nldbl-cpow.c | ||
| nldbl-cproj.c | ||
| nldbl-creal.c | ||
| nldbl-csin.c | ||
| nldbl-csinh.c | ||
| nldbl-csqrt.c | ||
| nldbl-ctan.c | ||
| nldbl-ctanh.c | ||
| nldbl-dprintf_chk.c | ||
| nldbl-dprintf.c | ||
| nldbl-erf.c | ||
| nldbl-erfc.c | ||
| nldbl-exp2.c | ||
| nldbl-exp10.c | ||
| nldbl-exp.c | ||
| nldbl-expm1.c | ||
| nldbl-fabs.c | ||
| nldbl-fdim.c | ||
| nldbl-finite.c | ||
| nldbl-floor.c | ||
| nldbl-fma.c | ||
| nldbl-fmax.c | ||
| nldbl-fmin.c | ||
| nldbl-fmod.c | ||
| nldbl-fprintf_chk.c | ||
| nldbl-fprintf.c | ||
| nldbl-frexp.c | ||
| nldbl-fscanf.c | ||
| nldbl-fwprintf_chk.c | ||
| nldbl-fwprintf.c | ||
| nldbl-fwscanf.c | ||
| nldbl-gamma.c | ||
| nldbl-getpayload.c | ||
| nldbl-hypot.c | ||
| nldbl-ilogb.c | ||
| nldbl-iovfscanf.c | ||
| nldbl-isinf.c | ||
| nldbl-isnan.c | ||
| nldbl-isoc99_fscanf.c | ||
| nldbl-isoc99_fwscanf.c | ||
| nldbl-isoc99_scanf.c | ||
| nldbl-isoc99_sscanf.c | ||
| nldbl-isoc99_swscanf.c | ||
| nldbl-isoc99_vfscanf.c | ||
| nldbl-isoc99_vfwscanf.c | ||
| nldbl-isoc99_vscanf.c | ||
| nldbl-isoc99_vsscanf.c | ||
| nldbl-isoc99_vswscanf.c | ||
| nldbl-isoc99_vwscanf.c | ||
| nldbl-isoc99_wscanf.c | ||
| nldbl-j0.c | ||
| nldbl-j1.c | ||
| nldbl-jn.c | ||
| nldbl-ldexp.c | ||
| nldbl-lgamma_r.c | ||
| nldbl-lgamma.c | ||
| nldbl-llogb.c | ||
| nldbl-llrint.c | ||
| nldbl-llround.c | ||
| nldbl-log1p.c | ||
| nldbl-log2.c | ||
| nldbl-log10.c | ||
| nldbl-log.c | ||
| nldbl-logb.c | ||
| nldbl-lrint.c | ||
| nldbl-lround.c | ||
| nldbl-modf.c | ||
| nldbl-nan.c | ||
| nldbl-nearbyint.c | ||
| nldbl-nextafter.c | ||
| nldbl-nextdown.c | ||
| nldbl-nexttoward.c | ||
| nldbl-nexttowardf.c | ||
| nldbl-nextup.c | ||
| nldbl-obstack_printf_chk.c | ||
| nldbl-obstack_printf.c | ||
| nldbl-obstack_vprintf_chk.c | ||
| nldbl-obstack_vprintf.c | ||
| nldbl-pow10.c | ||
| nldbl-pow.c | ||
| nldbl-printf_chk.c | ||
| nldbl-printf_fp.c | ||
| nldbl-printf_size.c | ||
| nldbl-printf.c | ||
| nldbl-qecvt_r.c | ||
| nldbl-qecvt.c | ||
| nldbl-qfcvt_r.c | ||
| nldbl-qfcvt.c | ||
| nldbl-qgcvt.c | ||
| nldbl-remainder.c | ||
| nldbl-remquo.c | ||
| nldbl-rint.c | ||
| nldbl-round.c | ||
| nldbl-scalb.c | ||
| nldbl-scalbln.c | ||
| nldbl-scalbn.c | ||
| nldbl-scanf.c | ||
| nldbl-setpayload.c | ||
| nldbl-setpayloadsig.c | ||
| nldbl-signbit.c | ||
| nldbl-significand.c | ||
| nldbl-sin.c | ||
| nldbl-sincos.c | ||
| nldbl-sinh.c | ||
| nldbl-snprintf_chk.c | ||
| nldbl-snprintf.c | ||
| nldbl-sprintf_chk.c | ||
| nldbl-sprintf.c | ||
| nldbl-sqrt.c | ||
| nldbl-sscanf.c | ||
| nldbl-strfmon_l.c | ||
| nldbl-strfmon.c | ||
| nldbl-strfroml.c | ||
| nldbl-strtold_l.c | ||
| nldbl-strtold.c | ||
| nldbl-strtoldint.c | ||
| nldbl-swprintf_chk.c | ||
| nldbl-swprintf.c | ||
| nldbl-swscanf.c | ||
| nldbl-syslog_chk.c | ||
| nldbl-syslog.c | ||
| nldbl-tan.c | ||
| nldbl-tanh.c | ||
| nldbl-tgamma.c | ||
| nldbl-totalorder.c | ||
| nldbl-totalordermag.c | ||
| nldbl-trunc.c | ||
| nldbl-vasprintf_chk.c | ||
| nldbl-vasprintf.c | ||
| nldbl-vdprintf_chk.c | ||
| nldbl-vdprintf.c | ||
| nldbl-vfprintf_chk.c | ||
| nldbl-vfprintf.c | ||
| nldbl-vfscanf.c | ||
| nldbl-vfwprintf_chk.c | ||
| nldbl-vfwprintf.c | ||
| nldbl-vfwscanf.c | ||
| nldbl-vprintf_chk.c | ||
| nldbl-vprintf.c | ||
| nldbl-vscanf.c | ||
| nldbl-vsnprintf_chk.c | ||
| nldbl-vsnprintf.c | ||
| nldbl-vsprintf_chk.c | ||
| nldbl-vsprintf.c | ||
| nldbl-vsscanf.c | ||
| nldbl-vswprintf_chk.c | ||
| nldbl-vswprintf.c | ||
| nldbl-vswscanf.c | ||
| nldbl-vsyslog_chk.c | ||
| nldbl-vsyslog.c | ||
| nldbl-vwprintf_chk.c | ||
| nldbl-vwprintf.c | ||
| nldbl-vwscanf.c | ||
| nldbl-wcstold_l.c | ||
| nldbl-wcstold.c | ||
| nldbl-wcstoldint.c | ||
| nldbl-wprintf_chk.c | ||
| nldbl-wprintf.c | ||
| nldbl-wscanf.c | ||
| nldbl-y0.c | ||
| nldbl-y1.c | ||
| nldbl-yn.c | ||
| s_asinh.c | ||
| s_atan.c | ||
| s_canonicalizel.c | ||
| s_cbrt.c | ||
| s_ceil.c | ||
| s_clog10l.c | ||
| s_copysign.c | ||
| s_erf.c | ||
| s_expm1.c | ||
| s_fabs.c | ||
| s_finite.c | ||
| s_floor.c | ||
| s_fma.c | ||
| s_fmal.c | ||
| s_frexp.c | ||
| s_isinf.c | ||
| s_isnan.c | ||
| s_ldexp.c | ||
| s_ldexpl.c | ||
| s_llrint.c | ||
| s_llround.c | ||
| s_log1p.c | ||
| s_logb.c | ||
| s_lrint.c | ||
| s_lround.c | ||
| s_modf.c | ||
| s_nearbyint.c | ||
| s_nextafter.c | ||
| s_nextdownl.c | ||
| s_nexttowardfd.c | ||
| s_remquo.c | ||
| s_rint.c | ||
| s_round.c | ||
| s_scalbln.c | ||
| s_scalbn.c | ||
| s_significand.c | ||
| s_significandl.c | ||
| s_sin.c | ||
| s_sincos.c | ||
| s_tan.c | ||
| s_tanh.c | ||
| s_trunc.c | ||
| Versions | ||
| w_acos.c | ||
| w_acosh.c | ||
| w_acoshl.c | ||
| w_acosl.c | ||
| w_asin.c | ||
| w_asinl.c | ||
| w_atan2.c | ||
| w_atan2l.c | ||
| w_atanh.c | ||
| w_atanhl.c | ||
| w_cosh.c | ||
| w_coshl.c | ||
| w_exp10.c | ||
| w_exp10l.c | ||
| w_exp.c | ||
| w_fmod.c | ||
| w_fmodl.c | ||
| w_hypot.c | ||
| w_hypotl.c | ||
| w_j0.c | ||
| w_j0l.c | ||
| w_j1.c | ||
| w_j1l.c | ||
| w_jn.c | ||
| w_jnl.c | ||
| w_lgamma_compat.c | ||
| w_lgamma_compatl.c | ||
| w_lgamma_r.c | ||
| w_lgammal_r.c | ||
| w_llogbl.c | ||
| w_log2.c | ||
| w_log2l.c | ||
| w_log10.c | ||
| w_log10l.c | ||
| w_log.c | ||
| w_logl.c | ||
| w_pow.c | ||
| w_powl.c | ||
| w_remainder.c | ||
| w_remainderl.c | ||
| w_scalb.c | ||
| w_scalbl.c | ||
| w_sinh.c | ||
| w_sinhl.c | ||
| w_sqrt.c | ||
| w_sqrtl.c | ||
| w_tgamma.c | ||
| w_tgammal.c | ||