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eb3c12c784
TS 18661-1 defines functions for manipulating the payloads of NaNs. This patch implements the setpayload functions for glibc; these set a number (pointed to by a function argument) to a quiet NaN with the given payload, or to +0 if the given payload is not valid. The implementations are structured to allow the substance of the implementation to be shared with the setpayloadsig functions when those are added. The semantics in the TS are not entirely clear in the case where the payload passed to the function is zero (see discussion on the WG14 reflector last month). This patch implements what seems the most sensible interpretation, that -0 is never valid to give as the payload, but +0 is valid in the case where the kind of NaN being generated has its high mantissa bit set so payload 0 is actually possible in such a NaN. Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (setpayload): New declaration. * math/Versions (setpayload): New libm symbol at version GLIBC_2.25. (setpayloadf): Likewise. (setpayloadl): Likewise. * math/Makefile (libm-calls): Add s_setpayloadF. * math/libm-test.inc (struct test_Ffp_b1_data): Rename to struct test_Ff_b1_data. (RUN_TEST_Ff_b1): New macro. (RUN_TEST_LOOP_Ff_b1): Likewise. (canonicalize_test_data): Update type. (setpayload_test_data): New array. (setpayload_test): New function. (main): Call setpayload_test. * manual/arith.texi (FP Bit Twiddling): Document setpayload, setpayloadf and setpayloadl. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/ieee754/dbl-64/s_setpayload.c: New file. * sysdeps/ieee754/dbl-64/s_setpayload_main.c: Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c: Likewise. * sysdeps/ieee754/flt-32/s_setpayloadf.c: Likewise. * sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Likewise. * sysdeps/ieee754/ldbl-128/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-96/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-setpayload.c: Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add setpayload. (CFLAGS-nldbl-setpayload.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.
227 lines
6.5 KiB
Plaintext
227 lines
6.5 KiB
Plaintext
libc {
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GLIBC_2.0 {
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# functions used in inline functions or macros
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__isnan; __isnanf; __isnanl; __finite; __finitef; __finitel;
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__isinf; __isinff; __isinfl;
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# global variables
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__fpu_control;
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# c*
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copysign; copysignf; copysignl;
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# f*
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finite; finitef; finitel; frexp; frexpf; frexpl;
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# i*
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isinf; isinff; isinfl; isnan; isnanf; isnanl; ldexp; ldexpf; ldexpl;
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# m*
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modf; modff; modfl;
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# s*
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scalbn; scalbnf; scalbnl;
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}
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GLIBC_2.1 {
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# functions used in inline functions or macros
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__signbit; __signbitf; __signbitl;
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# s*
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scalbln; scalblnf; scalblnl;
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}
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GLIBC_2.20 {
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}
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}
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libm {
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GLIBC_2.0 {
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# mathematical functions
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acos; acosf; acosl;
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acosh; acoshf; acoshl;
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asin; asinf; asinl;
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asinh; asinhf; asinhl;
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atan2; atan2f; atan2l;
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atan; atanf; atanl;
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atanh; atanhf; atanhl;
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cbrt; cbrtf; cbrtl;
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ceil; ceilf; ceill;
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copysign; copysignf; copysignl;
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cos; cosf; cosl;
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coshf; cosh; coshl;
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drem; dremf; dreml;
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erf; erff; erfl;
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erfc; erfcf; erfcl;
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exp; expf; expl;
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expm1; expm1f; expm1l;
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fabs; fabsf; fabsl;
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finite; finitef; finitel;
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floor; floorf; floorl;
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fmod; fmodf; fmodl;
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frexp; frexpf; frexpl;
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gamma; gammaf; gammal;
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gamma_r; gammaf_r; gammal_r;
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hypot; hypotf; hypotl;
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ilogb; ilogbf; ilogbl;
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j0; j0f; j0l;
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j1; j1f; j1l;
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jn; jnf; jnl;
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ldexp; ldexpf; ldexpl;
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lgamma; lgammaf; lgammal;
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lgamma_r; lgammaf_r; lgammal_r;
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log10; log10f; log10l;
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log1p; log1pf; log1pl;
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log; logf; logl;
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logb; logbf; logbl;
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matherr;
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modf; modff; modfl;
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nextafter; nextafterf; nextafterl;
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pow; powf; powl;
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remainder; remainderf; remainderl;
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rint; rintf; rintl;
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scalb; scalbf; scalbl;
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scalbn; scalbnf; scalbnl;
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significand; significandf; significandl;
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sin; sinf; sinl;
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sinh; sinhf; sinhl;
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sqrt; sqrtf; sqrtl;
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tan; tanf; tanl;
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tanh; tanhf; tanhl;
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y0; y0f; y0l;
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y1; y1f; y1l;
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yn; ynf; ynl;
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# global variables
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_LIB_VERSION; signgam;
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}
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GLIBC_2.1 {
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# mathematical functions
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exp2; exp2f; # exp2l; -- bug omitted this until GLIBC_2.4 (below)
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exp10; exp10f; exp10l;
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fdim; fdimf; fdiml;
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fma; fmaf; fmal;
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fmax; fmaxf; fmaxl;
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fmin; fminf; fminl;
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log2; log2f; log2l;
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nan; nanf; nanl;
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nearbyint; nearbyintf; nearbyintl;
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nexttoward; nexttowardf; nexttowardl;
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pow10; pow10f; pow10l;
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remquo; remquof; remquol;
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lrint; lrintf; lrintl;
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llrint; llrintf; llrintl;
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round; roundf; roundl;
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lround; lroundf; lroundl;
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llround; llroundf; llroundl;
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scalbln; scalblnf; scalblnl;
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sincos; sincosf; sincosl;
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trunc; truncf; truncl;
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tgamma; tgammaf; tgammal;
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# complex functions
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cabs; cabsf; cabsl;
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cacos; cacosf; cacosl;
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cacosh; cacoshf; cacoshl;
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carg; cargf; cargl;
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casin; casinf; casinl;
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casinh; casinhf; casinhl;
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catan; catanf; catanl;
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catanh; catanhf; catanhl;
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ccos; ccosf; ccosl;
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ccosh; ccoshf; ccoshl;
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cexp; cexpf; cexpl;
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cimag; cimagf; cimagl;
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clog; clogf; clogl;
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clog10; clog10f; clog10l;
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__clog10; __clog10f; __clog10l;
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conj; conjf; conjl;
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cpow; cpowf; cpowl;
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cproj; cprojf; cprojl;
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creal; crealf; creall;
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csin; csinf; csinl;
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csinh; csinhf; csinhl;
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csqrt; csqrtf; csqrtl;
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ctan; ctanf; ctanl;
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ctanh; ctanhf; ctanhl;
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# fp environment functions
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feclearexcept; fegetenv; fegetexceptflag;
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fegetround; feholdexcept; feraiseexcept;
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fesetenv; fesetexceptflag; fesetround;
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fetestexcept; feupdateenv;
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# functions used in inline functions or macros
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__finite; __finitef; __finitel;
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__fpclassify; __fpclassifyf; __fpclassifyl;
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__signbit; __signbitf; __signbitl;
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}
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GLIBC_2.2 {
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# fp environment functions changes from ISO C99 TR1
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feclearexcept; fegetenv; fegetexceptflag; feraiseexcept;
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fesetenv; fesetexceptflag; feupdateenv;
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# fp environment function
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feenableexcept; fedisableexcept; fegetexcept;
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}
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GLIBC_2.4 {
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# A bug in sysdeps/generic/w_exp2.c kept this from appearing
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# in GLIBC_2.1 as it should have on platforms using that
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# implementation file. On others, sysdeps/CPU/Versions now
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# puts exp2l in GLIBC_2.1, which will override this entry.
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exp2l;
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}
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GLIBC_2.15 {
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# Optimized -ffinite-math-only entry points
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__acos_finite; __acosf_finite; __acosl_finite;
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__acosh_finite; __acoshf_finite; __acoshl_finite;
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__asin_finite; __asinf_finite; __asinl_finite;
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__atan2_finite; __atan2f_finite; __atan2l_finite;
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__atanh_finite; __atanhf_finite; __atanhl_finite;
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__cosh_finite; __coshf_finite; __coshl_finite;
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__exp10_finite; __exp10f_finite; __exp10l_finite;
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__exp2_finite; __exp2f_finite; __exp2l_finite;
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__fmod_finite; __fmodf_finite; __fmodl_finite;
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__hypot_finite; __hypotf_finite; __hypotl_finite;
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__j0_finite; __j0f_finite; __j0l_finite;
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__y0_finite; __y0f_finite; __y0l_finite;
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__j1_finite; __j1f_finite; __j1l_finite;
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__y1_finite; __y1f_finite; __y1l_finite;
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__jn_finite; __jnf_finite; __jnl_finite;
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__yn_finite; __ynf_finite; __ynl_finite;
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__lgamma_r_finite; __lgammaf_r_finite; __lgammal_r_finite;
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__log_finite; __logf_finite; __logl_finite;
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__log10_finite; __log10f_finite; __log10l_finite;
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__log2_finite; __log2f_finite; __log2l_finite;
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__pow_finite; __powf_finite; __powl_finite;
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__remainder_finite; __remainderf_finite; __remainderl_finite;
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__scalb_finite; __scalbf_finite; __scalbl_finite;
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__sinh_finite; __sinhf_finite; __sinhl_finite;
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__sqrt_finite; __sqrtf_finite; __sqrtl_finite;
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__gamma_r_finite; __gammaf_r_finite; __gammal_r_finite;
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__exp_finite; __expf_finite; __expl_finite;
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}
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GLIBC_2.18 {
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__issignaling; __issignalingf; __issignalingl;
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}
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GLIBC_2.23 {
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# The __signgam name must be exported for the signgam weak alias
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# to work. New symbol versions of lgamma* that set __signgam are
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# needed to preserve compatibility with old binaries that have a
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# dynamic symbol for signgam but not __signgam.
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lgamma; lgammaf; lgammal; __signgam;
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}
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GLIBC_2.24 {
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nextup; nextupf; nextupl;
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nextdown; nextdownf; nextdownl;
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}
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GLIBC_2.25 {
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fesetexcept; fetestexceptflag; fegetmode; fesetmode;
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__iscanonicall; __iseqsigf; __iseqsig; __iseqsigl;
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totalorder; totalorderf; totalorderl;
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totalordermag; totalordermagf; totalordermagl;
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getpayload; getpayloadf; getpayloadl;
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canonicalize; canonicalizef; canonicalizel;
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setpayload; setpayloadf; setpayloadl;
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}
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}
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