glibc/math/Versions
Joseph Myers abd383584b Add narrowing square root functions
This patch adds the narrowing square root functions from TS 18661-1 /
TS 18661-3 / C2X to glibc's libm: fsqrt, fsqrtl, dsqrtl, f32sqrtf64,
f32sqrtf32x, f32xsqrtf64 for all configurations; f32sqrtf64x,
f32sqrtf128, f64sqrtf64x, f64sqrtf128, f32xsqrtf64x, f32xsqrtf128,
f64xsqrtf128 for configurations with _Float64x and _Float128;
__f32sqrtieee128 and __f64sqrtieee128 aliases in the powerpc64le case
(for calls to fsqrtl and dsqrtl when long double is IEEE binary128).
Corresponding tgmath.h macro support is also added.

The changes are mostly similar to those for the other narrowing
functions previously added, so the description of those generally
applies to this patch as well.  However, the not-actually-narrowing
cases (where the two types involved in the function have the same
floating-point format) are aliased to sqrt, sqrtl or sqrtf128 rather
than needing a separately built not-actually-narrowing function such
as was needed for add / sub / mul / div.  Thus, there is no
__nldbl_dsqrtl name for ldbl-opt because no such name was needed
(whereas the other functions needed such a name since the only other
name for that entry point was e.g. f32xaddf64, not reserved by TS
18661-1); the headers are made to arrange for sqrt to be called in
that case instead.

The DIAG_* calls in sysdeps/ieee754/soft-fp/s_dsqrtl.c are because
they were observed to be needed in GCC 7 testing of
riscv32-linux-gnu-rv32imac-ilp32.  The other sysdeps/ieee754/soft-fp/
files added didn't need such DIAG_* in any configuration I tested with
build-many-glibcs.py, but if they do turn out to be needed in more
files with some other configuration / GCC version, they can always be
added there.

I reused the same test inputs in auto-libm-test-in as for
non-narrowing sqrt rather than adding extra or separate inputs for
narrowing sqrt.  The tests in libm-test-narrow-sqrt.inc also follow
those for non-narrowing sqrt.

Tested as followed: natively with the full glibc testsuite for x86_64
(GCC 11, 7, 6) and x86 (GCC 11); with build-many-glibcs.py with GCC
11, 7 and 6; cross testing of math/ tests for powerpc64le, powerpc32
hard float, mips64 (all three ABIs, both hard and soft float).  The
different GCC versions are to cover the different cases in tgmath.h
and tgmath.h tests properly (GCC 6 has _Float* only as typedefs in
glibc headers, GCC 7 has proper _Float* support, GCC 8 adds
__builtin_tgmath).
2021-09-10 20:56:22 +00:00

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%include <float128-abi.h>
libc {
GLIBC_2.0 {
# functions used in inline functions or macros
__isnan; __isnanf; __isnanl; __finite; __finitef; __finitel;
__isinf; __isinff; __isinfl;
# global variables
__fpu_control;
# c*
copysign; copysignf; copysignl;
# f*
finite; finitef; finitel; frexp; frexpf; frexpl;
# i*
isinf; isinff; isinfl; isnan; isnanf; isnanl; ldexp; ldexpf; ldexpl;
# m*
modf; modff; modfl;
# s*
scalbn; scalbnf; scalbnl;
}
GLIBC_2.1 {
# functions used in inline functions or macros
__signbit; __signbitf; __signbitl;
# s*
scalbln; scalblnf; scalblnl;
}
GLIBC_2.20 {
}
}
libm {
GLIBC_2.0 {
# mathematical functions
acos; acosf; acosl;
acosh; acoshf; acoshl;
asin; asinf; asinl;
asinh; asinhf; asinhl;
atan2; atan2f; atan2l;
atan; atanf; atanl;
atanh; atanhf; atanhl;
cbrt; cbrtf; cbrtl;
ceil; ceilf; ceill;
copysign; copysignf; copysignl;
cos; cosf; cosl;
coshf; cosh; coshl;
drem; dremf; dreml;
erf; erff; erfl;
erfc; erfcf; erfcl;
exp; expf; expl;
expm1; expm1f; expm1l;
fabs; fabsf; fabsl;
finite; finitef; finitel;
floor; floorf; floorl;
fmod; fmodf; fmodl;
frexp; frexpf; frexpl;
gamma; gammaf; gammal;
gamma_r; gammaf_r; gammal_r;
hypot; hypotf; hypotl;
ilogb; ilogbf; ilogbl;
j0; j0f; j0l;
j1; j1f; j1l;
jn; jnf; jnl;
ldexp; ldexpf; ldexpl;
lgamma; lgammaf; lgammal;
lgamma_r; lgammaf_r; lgammal_r;
log10; log10f; log10l;
log1p; log1pf; log1pl;
log; logf; logl;
logb; logbf; logbl;
matherr;
modf; modff; modfl;
nextafter; nextafterf; nextafterl;
pow; powf; powl;
remainder; remainderf; remainderl;
rint; rintf; rintl;
scalb; scalbf; scalbl;
scalbn; scalbnf; scalbnl;
significand; significandf; significandl;
sin; sinf; sinl;
sinh; sinhf; sinhl;
sqrt; sqrtf; sqrtl;
tan; tanf; tanl;
tanh; tanhf; tanhl;
y0; y0f; y0l;
y1; y1f; y1l;
yn; ynf; ynl;
# global variables
_LIB_VERSION; signgam;
}
GLIBC_2.1 {
# mathematical functions
exp2; exp2f; # exp2l; -- bug omitted this until GLIBC_2.4 (below)
exp10; exp10f; exp10l;
fdim; fdimf; fdiml;
fma; fmaf; fmal;
fmax; fmaxf; fmaxl;
fmin; fminf; fminl;
log2; log2f; log2l;
nan; nanf; nanl;
nearbyint; nearbyintf; nearbyintl;
nexttoward; nexttowardf; nexttowardl;
pow10; pow10f; pow10l;
remquo; remquof; remquol;
lrint; lrintf; lrintl;
llrint; llrintf; llrintl;
round; roundf; roundl;
lround; lroundf; lroundl;
llround; llroundf; llroundl;
scalbln; scalblnf; scalblnl;
sincos; sincosf; sincosl;
trunc; truncf; truncl;
tgamma; tgammaf; tgammal;
# complex functions
cabs; cabsf; cabsl;
cacos; cacosf; cacosl;
cacosh; cacoshf; cacoshl;
carg; cargf; cargl;
casin; casinf; casinl;
casinh; casinhf; casinhl;
catan; catanf; catanl;
catanh; catanhf; catanhl;
ccos; ccosf; ccosl;
ccosh; ccoshf; ccoshl;
cexp; cexpf; cexpl;
cimag; cimagf; cimagl;
clog; clogf; clogl;
clog10; clog10f; clog10l;
__clog10; __clog10f; __clog10l;
conj; conjf; conjl;
cpow; cpowf; cpowl;
cproj; cprojf; cprojl;
creal; crealf; creall;
csin; csinf; csinl;
csinh; csinhf; csinhl;
csqrt; csqrtf; csqrtl;
ctan; ctanf; ctanl;
ctanh; ctanhf; ctanhl;
# fp environment functions
feclearexcept; fegetenv; fegetexceptflag;
fegetround; feholdexcept; feraiseexcept;
fesetenv; fesetexceptflag; fesetround;
fetestexcept; feupdateenv;
# functions used in inline functions or macros
__finite; __finitef; __finitel;
__fpclassify; __fpclassifyf; __fpclassifyl;
__signbit; __signbitf; __signbitl;
}
GLIBC_2.2 {
# fp environment functions changes from ISO C99 TR1
feclearexcept; fegetenv; fegetexceptflag; feraiseexcept;
fesetenv; fesetexceptflag; feupdateenv;
# fp environment function
feenableexcept; fedisableexcept; fegetexcept;
}
GLIBC_2.4 {
# A bug in sysdeps/generic/w_exp2.c kept this from appearing
# in GLIBC_2.1 as it should have on platforms using that
# implementation file. On others, sysdeps/CPU/Versions now
# puts exp2l in GLIBC_2.1, which will override this entry.
exp2l;
}
GLIBC_2.15 {
# Optimized -ffinite-math-only entry points
__acos_finite; __acosf_finite; __acosl_finite;
__acosh_finite; __acoshf_finite; __acoshl_finite;
__asin_finite; __asinf_finite; __asinl_finite;
__atan2_finite; __atan2f_finite; __atan2l_finite;
__atanh_finite; __atanhf_finite; __atanhl_finite;
__cosh_finite; __coshf_finite; __coshl_finite;
__exp10_finite; __exp10f_finite; __exp10l_finite;
__exp2_finite; __exp2f_finite; __exp2l_finite;
__fmod_finite; __fmodf_finite; __fmodl_finite;
__hypot_finite; __hypotf_finite; __hypotl_finite;
__j0_finite; __j0f_finite; __j0l_finite;
__y0_finite; __y0f_finite; __y0l_finite;
__j1_finite; __j1f_finite; __j1l_finite;
__y1_finite; __y1f_finite; __y1l_finite;
__jn_finite; __jnf_finite; __jnl_finite;
__yn_finite; __ynf_finite; __ynl_finite;
__lgamma_r_finite; __lgammaf_r_finite; __lgammal_r_finite;
__log_finite; __logf_finite; __logl_finite;
__log10_finite; __log10f_finite; __log10l_finite;
__log2_finite; __log2f_finite; __log2l_finite;
__pow_finite; __powf_finite; __powl_finite;
__remainder_finite; __remainderf_finite; __remainderl_finite;
__scalb_finite; __scalbf_finite; __scalbl_finite;
__sinh_finite; __sinhf_finite; __sinhl_finite;
__sqrt_finite; __sqrtf_finite; __sqrtl_finite;
__gamma_r_finite; __gammaf_r_finite; __gammal_r_finite;
__exp_finite; __expf_finite; __expl_finite;
}
GLIBC_2.18 {
__issignaling; __issignalingf; __issignalingl;
}
GLIBC_2.23 {
# The __signgam name must be exported for the signgam weak alias
# to work. New symbol versions of lgamma* that set __signgam are
# needed to preserve compatibility with old binaries that have a
# dynamic symbol for signgam but not __signgam.
lgamma; lgammaf; lgammal; __signgam;
}
GLIBC_2.24 {
nextup; nextupf; nextupl;
nextdown; nextdownf; nextdownl;
}
GLIBC_2.25 {
fesetexcept; fetestexceptflag; fegetmode; fesetmode;
__iscanonicall; __iseqsigf; __iseqsig; __iseqsigl;
totalorder; totalorderf; totalorderl;
totalordermag; totalordermagf; totalordermagl;
getpayload; getpayloadf; getpayloadl;
canonicalize; canonicalizef; canonicalizel;
setpayload; setpayloadf; setpayloadl;
setpayloadsig; setpayloadsigf; setpayloadsigl;
llogb; llogbf; llogbl;
fmaxmag; fmaxmagf; fmaxmagl; fminmag; fminmagf; fminmagl;
roundeven; roundevenf; roundevenl;
fromfp; fromfpf; fromfpl; ufromfp; ufromfpf; ufromfpl;
fromfpx; fromfpxf; fromfpxl; ufromfpx; ufromfpxf; ufromfpxl;
}
%ifdef FLOAT128_VERSION
FLOAT128_VERSION {
acosf128;
acoshf128;
asinf128;
asinhf128;
atan2f128;
atanf128;
atanhf128;
cabsf128;
cacosf128;
cacoshf128;
canonicalizef128;
cargf128;
casinf128;
casinhf128;
catanf128;
catanhf128;
cbrtf128;
ccosf128;
ccoshf128;
ceilf128;
cexpf128;
cimagf128;
clog10f128;
clogf128;
conjf128;
copysignf128;
cosf128;
coshf128;
cpowf128;
cprojf128;
crealf128;
csinf128;
csinhf128;
csqrtf128;
ctanf128;
ctanhf128;
erfcf128;
erff128;
exp10f128;
exp2f128;
expf128;
expm1f128;
fabsf128;
fdimf128;
floorf128;
fmaf128;
fmaxf128;
fmaxmagf128;
fminf128;
fminmagf128;
fmodf128;
frexpf128;
fromfpf128;
fromfpxf128;
getpayloadf128;
hypotf128;
ilogbf128;
j0f128;
j1f128;
jnf128;
ldexpf128;
lgammaf128;
lgammaf128_r;
llogbf128;
llrintf128;
llroundf128;
log10f128;
log1pf128;
log2f128;
logbf128;
logf128;
lrintf128;
lroundf128;
modff128;
nanf128;
nearbyintf128;
nextafterf128;
nextdownf128;
nextupf128;
powf128;
remainderf128;
remquof128;
rintf128;
roundevenf128;
roundf128;
scalblnf128;
scalbnf128;
setpayloadf128;
setpayloadsigf128;
sincosf128;
sinf128;
sinhf128;
sqrtf128;
tanf128;
tanhf128;
tgammaf128;
totalorderf128;
totalordermagf128;
truncf128;
ufromfpf128;
ufromfpxf128;
y0f128;
y1f128;
ynf128;
}
%endif
GLIBC_2.27 {
expf; exp2f; logf; log2f; powf;
# _Float64x functions, only present for some configurations.
acosf64x;
acoshf64x;
asinf64x;
asinhf64x;
atan2f64x;
atanf64x;
atanhf64x;
cabsf64x;
cacosf64x;
cacoshf64x;
canonicalizef64x;
cargf64x;
casinf64x;
casinhf64x;
catanf64x;
catanhf64x;
cbrtf64x;
ccosf64x;
ccoshf64x;
ceilf64x;
cexpf64x;
cimagf64x;
clog10f64x;
clogf64x;
conjf64x;
copysignf64x;
cosf64x;
coshf64x;
cpowf64x;
cprojf64x;
crealf64x;
csinf64x;
csinhf64x;
csqrtf64x;
ctanf64x;
ctanhf64x;
erfcf64x;
erff64x;
exp10f64x;
exp2f64x;
expf64x;
expm1f64x;
fabsf64x;
fdimf64x;
floorf64x;
fmaf64x;
fmaxf64x;
fmaxmagf64x;
fminf64x;
fminmagf64x;
fmodf64x;
frexpf64x;
fromfpf64x;
fromfpxf64x;
getpayloadf64x;
hypotf64x;
ilogbf64x;
j0f64x;
j1f64x;
jnf64x;
ldexpf64x;
lgammaf64x;
lgammaf64x_r;
llogbf64x;
llrintf64x;
llroundf64x;
log10f64x;
log1pf64x;
log2f64x;
logbf64x;
logf64x;
lrintf64x;
lroundf64x;
modff64x;
nanf64x;
nearbyintf64x;
nextafterf64x;
nextdownf64x;
nextupf64x;
powf64x;
remainderf64x;
remquof64x;
rintf64x;
roundevenf64x;
roundf64x;
scalblnf64x;
scalbnf64x;
setpayloadf64x;
setpayloadsigf64x;
sincosf64x;
sinf64x;
sinhf64x;
sqrtf64x;
tanf64x;
tanhf64x;
tgammaf64x;
totalorderf64x;
totalordermagf64x;
truncf64x;
ufromfpf64x;
ufromfpxf64x;
y0f64x;
y1f64x;
ynf64x;
# _Float32, _Float64 and _Float32x functions, for all configurations.
acosf32; acosf64; acosf32x;
acoshf32; acoshf64; acoshf32x;
asinf32; asinf64; asinf32x;
asinhf32; asinhf64; asinhf32x;
atan2f32; atan2f64; atan2f32x;
atanf32; atanf64; atanf32x;
atanhf32; atanhf64; atanhf32x;
cabsf32; cabsf64; cabsf32x;
cacosf32; cacosf64; cacosf32x;
cacoshf32; cacoshf64; cacoshf32x;
canonicalizef32; canonicalizef64; canonicalizef32x;
cargf32; cargf64; cargf32x;
casinf32; casinf64; casinf32x;
casinhf32; casinhf64; casinhf32x;
catanf32; catanf64; catanf32x;
catanhf32; catanhf64; catanhf32x;
cbrtf32; cbrtf64; cbrtf32x;
ccosf32; ccosf64; ccosf32x;
ccoshf32; ccoshf64; ccoshf32x;
ceilf32; ceilf64; ceilf32x;
cexpf32; cexpf64; cexpf32x;
cimagf32; cimagf64; cimagf32x;
clog10f32; clog10f64; clog10f32x;
clogf32; clogf64; clogf32x;
conjf32; conjf64; conjf32x;
copysignf32; copysignf64; copysignf32x;
cosf32; cosf64; cosf32x;
coshf32; coshf64; coshf32x;
cpowf32; cpowf64; cpowf32x;
cprojf32; cprojf64; cprojf32x;
crealf32; crealf64; crealf32x;
csinf32; csinf64; csinf32x;
csinhf32; csinhf64; csinhf32x;
csqrtf32; csqrtf64; csqrtf32x;
ctanf32; ctanf64; ctanf32x;
ctanhf32; ctanhf64; ctanhf32x;
erfcf32; erfcf64; erfcf32x;
erff32; erff64; erff32x;
exp10f32; exp10f64; exp10f32x;
exp2f32; exp2f64; exp2f32x;
expf32; expf64; expf32x;
expm1f32; expm1f64; expm1f32x;
fabsf32; fabsf64; fabsf32x;
fdimf32; fdimf64; fdimf32x;
floorf32; floorf64; floorf32x;
fmaf32; fmaf64; fmaf32x;
fmaxf32; fmaxf64; fmaxf32x;
fmaxmagf32; fmaxmagf64; fmaxmagf32x;
fminf32; fminf64; fminf32x;
fminmagf32; fminmagf64; fminmagf32x;
fmodf32; fmodf64; fmodf32x;
frexpf32; frexpf64; frexpf32x;
fromfpf32; fromfpf64; fromfpf32x;
fromfpxf32; fromfpxf64; fromfpxf32x;
getpayloadf32; getpayloadf64; getpayloadf32x;
hypotf32; hypotf64; hypotf32x;
ilogbf32; ilogbf64; ilogbf32x;
j0f32; j0f64; j0f32x;
j1f32; j1f64; j1f32x;
jnf32; jnf64; jnf32x;
ldexpf32; ldexpf64; ldexpf32x;
lgammaf32; lgammaf64; lgammaf32x;
lgammaf32_r; lgammaf64_r; lgammaf32x_r;
llogbf32; llogbf64; llogbf32x;
llrintf32; llrintf64; llrintf32x;
llroundf32; llroundf64; llroundf32x;
log10f32; log10f64; log10f32x;
log1pf32; log1pf64; log1pf32x;
log2f32; log2f64; log2f32x;
logbf32; logbf64; logbf32x;
logf32; logf64; logf32x;
lrintf32; lrintf64; lrintf32x;
lroundf32; lroundf64; lroundf32x;
modff32; modff64; modff32x;
nanf32; nanf64; nanf32x;
nearbyintf32; nearbyintf64; nearbyintf32x;
nextafterf32; nextafterf64; nextafterf32x;
nextdownf32; nextdownf64; nextdownf32x;
nextupf32; nextupf64; nextupf32x;
powf32; powf64; powf32x;
remainderf32; remainderf64; remainderf32x;
remquof32; remquof64; remquof32x;
rintf32; rintf64; rintf32x;
roundevenf32; roundevenf64; roundevenf32x;
roundf32; roundf64; roundf32x;
scalblnf32; scalblnf64; scalblnf32x;
scalbnf32; scalbnf64; scalbnf32x;
setpayloadf32; setpayloadf64; setpayloadf32x;
setpayloadsigf32; setpayloadsigf64; setpayloadsigf32x;
sincosf32; sincosf64; sincosf32x;
sinf32; sinf64; sinf32x;
sinhf32; sinhf64; sinhf32x;
sqrtf32; sqrtf64; sqrtf32x;
tanf32; tanf64; tanf32x;
tanhf32; tanhf64; tanhf32x;
tgammaf32; tgammaf64; tgammaf32x;
totalorderf32; totalorderf64; totalorderf32x;
totalordermagf32; totalordermagf64; totalordermagf32x;
truncf32; truncf64; truncf32x;
ufromfpf32; ufromfpf64; ufromfpf32x;
ufromfpxf32; ufromfpxf64; ufromfpxf32x;
y0f32; y0f64; y0f32x;
y1f32; y1f64; y1f32x;
ynf32; ynf64; ynf32x;
}
GLIBC_2.28 {
# Functions not involving _Float64x or _Float128, for all configurations.
fadd; faddl; daddl;
f32addf32x; f32addf64; f32xaddf64;
fdiv; fdivl; ddivl;
f32divf32x; f32divf64; f32xdivf64;
fmul; fmull; dmull;
f32mulf32x; f32mulf64; f32xmulf64;
fsub; fsubl; dsubl;
f32subf32x; f32subf64; f32xsubf64;
# Functions involving _Float64x or _Float128, for some configurations.
f32addf64x; f32addf128;
f32xaddf64x; f32xaddf128; f64addf64x; f64addf128;
f64xaddf128;
f32divf64x; f32divf128;
f32xdivf64x; f32xdivf128; f64divf64x; f64divf128;
f64xdivf128;
f32mulf64x; f32mulf128;
f32xmulf64x; f32xmulf128; f64mulf64x; f64mulf128;
f64xmulf128;
f32subf64x; f32subf128;
f32xsubf64x; f32xsubf128; f64subf64x; f64subf128;
f64xsubf128;
}
GLIBC_2.29 {
# No SVID compatible error handling.
exp; exp2; log; log2; pow;
}
GLIBC_2.31 {
# totalorder changed to take pointer arguments.
totalorder; totalorderf; totalorderl;
totalordermag; totalordermagf; totalordermagl;
totalorderf32; totalorderf64; totalorderf32x;
totalordermagf32; totalordermagf64; totalordermagf32x;
totalorderf64x;
totalordermagf64x;
totalorderf128;
totalordermagf128;
}
GLIBC_2.32 {
exp10f;
}
GLIBC_2.35 {
# Functions not involving _Float64x or _Float128, for all configurations.
fsqrt; fsqrtl; dsqrtl;
f32sqrtf32x; f32sqrtf64; f32xsqrtf64;
# Functions involving _Float64x or _Float128, for some configurations.
f32sqrtf64x; f32sqrtf128;
f32xsqrtf64x; f32xsqrtf128; f64sqrtf64x; f64sqrtf128;
f64xsqrtf128;
}
}