Changes in Makefile

8df6c930 - lib/msun: Fix tgammal(3) on IEEE 128-bit platforms

Fri, 01 Mar 2024 15:53:58 +0000

lib/msun: Fix tgammal(3) on IEEE 128-bit platformsUndo the 80-bit "stub" implementation of the 128-bit long doubletgammal(3) function. The latest (as of Feb 2024) version of thesrc/contrib/arm-optimised-routines library includes a standalone,full 128-bit replacement. This needs a small bit of wrapping tofit it in, but is otherwise a drop-in replacement.Testing this is hard, as most maths packages blow up as soon astheir 80-bit floating-point capability is exceeded. With 128-bittgammal(), this is easy to do, and this is the range that needs tobe checked the most carefully. Using my copy of Maple, I was ableto check that the output was within a few ULP of the correct answer,right up to the point of 128-bit over- and underflow. Additionally,the results are no worse, and indeed better than the 80-bit version.Steve Kargl sent me his libm testing code, which I used to verifythat the excpetions for certain key values were correct. Tested inthis case were +-Inf, +-NaN, +-1 and +-0.Differential Revision: https://reviews.freebsd.org/D44168Reviewed by: theraven, andrew, imp(cherry-picked from commit e38f2308273c8a51ec45f013d22c963590917cca) List of files: /freebsd-14.2/lib/msun/Makefile

277382e9 - msun: remove fabs from Symbol.map, and adjust comment

Sat, 27 Jan 2024 21:24:38 +0000

msun: remove fabs from Symbol.map, and adjust commentWe have s_fabs.c, but fabs(3) is already provided by libc due tohistorical reasons, so it is not compiled into libm. When the linkerdoes not use --undefined-version, this leads to a complaint about thesymbol being nonexistent, so remove it from Symbol.map.While here, adjust the comment about some functions being supplied bylibc: while it is true that all these are indeed in libc, libm stillincludes its own versions of frexp(3), isnan(3), isnanf(3), andisnanl(3).Reported by: Steve Kargl MFC after: 3 days(cherry picked from commit d04e03c19a8d7660ea36f62720eef9bc96b69889) List of files: /freebsd-14.2/lib/msun/Makefile

1972e2eb - msun: LIBCSRCDIR is too fragile, use ${SRCTOP}/lib/libc instead

Tue, 05 Sep 2023 20:58:06 +0000

msun: LIBCSRCDIR is too fragile, use ${SRCTOP}/lib/libc insteadLIBCSRCDIR is defined in bsd.libnames.mk, which is read in later in theMakefile than the line:.if exists(${LIBCSRCDIR}/${MACHINE_ARCH})so we test to see if /${MARCHIN_ARCH} exists which it usually doesn't(but did for me since I mounted 13.2R SD image there). Move to definingour own LIBC_SRCTOP in terms of SRCTOP to treat these uniformily.Sponsored by: NetflixReviewed by: sjgDifferential Revision: https://reviews.freebsd.org/D41661(cherry picked from commit b19d8afe4dd205f7d4bfa3282f58b73d504926db)Approved by: re (cperciva@) List of files: /freebsd-14.2/lib/msun/Makefile

d0b2dbfa - Remove $FreeBSD$: one-line sh pattern

Wed, 16 Aug 2023 17:55:03 +0000

Remove $FreeBSD$: one-line sh patternRemove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ List of files: /freebsd-14.2/lib/msun/Makefile

c44ca4c2 - msun/Makefile: Fix conditional and unbreak the build.

Fri, 09 Sep 2022 07:48:48 +0000

msun/Makefile: Fix conditional and unbreak the build.Approved by: impFixes: 20adba8bc1beb125d5e5ed8f12e747ae79ca6a10 List of files: /freebsd-14.2/lib/msun/Makefile

20adba8b - src.conf: Introduce WITHOUT_MACHDEP knob.

Mon, 08 Aug 2022 15:16:00 +0000

src.conf: Introduce WITHOUT_MACHDEP knob.Summary:This knob can be used to make buildsystem prefer generic C implentations ofvarious functions, instead of machine-specific assembler ones.Test Plan: `make buildworld` on amd64Reviewed by: imp, emasteDifferential Revision: https://reviews.freebsd.org/D36076MFC after: 3 days List of files: /freebsd-14.2/lib/msun/Makefile

03a88e3d - * lib/msun/Makefile b/lib/msun/Makefile:

Tue, 14 Dec 2021 09:08:57 +0000

* lib/msun/Makefile b/lib/msun/Makefile: . Disconnect imprecise.c from the build. This file can be deleted. . Add b_tgammal.c to the build for ld80 and ld128 targets. The ld128 is a 'git mv' of imprecise.c to ld128/b_tgammal.c.* lib/msun/ld80/b_expl.c: . New file. Implement __exp__D for ld80 targets. This is based on bsdsrc/b_exp.c.* lib/msun/ld80/b_logl.c: . New file. Implement __log__D for ld80 targets. This is based on bsdsrc/b_log.c.* lib/msun/ld80/b_tgammal.c b/lib/msun/ld80/b_tgammal.c . New file. Implement tgammal(x) for ld80 targets.Submitted by: Steve KarglDifferential Revision: https://reviews.freebsd.org/D33444Reviewed by: pfg List of files: /freebsd-14.2/lib/msun/Makefile

455b2ccd - * lib/msun/Makefile:

Tue, 14 Dec 2021 09:02:45 +0000

* lib/msun/Makefile: . Disconnect b_exp.c and b_log.c from the build.* lib/msun/bsdsrc/b_exp.c: . Replace scalb() usage with C99's ldexp(). . Replace finite(x) usage with C99's isfinite(). . Whitespace changes towards style(9). . Remove include of "mathimpl.h". It is no longer needed. . Remove #if 0 ... #endif code, which has been present since svn r93211 (2002-03-26). . New minimax polynomial coefficients. . Add comments to explain origins of some constants. . Use ansi-C prototype. Remove K&R prototype. Add static to prototype.* lib/msun/bsdsrc/b_log.c: . Remove include of "mathimpl.h". It is no longer needed. . Fix comments to actually describe the code. . Reduce minimax polynomial from degree 4 to degree 3. This uses newly computed coefficients. . Use ansi-C prototype. Remove K&R prototype. Add static to prototype. . Remove volatile in declaration of u1. . Alphabetize decalaration list. . Whitespace changes towards style(9). . In argument reduction of x to g and m, replace use of logb() and ldexp() with a single call to frexp(). Add code to get 1 <= g < 2. . Remove #if 0 ... #endif code, which has been present since svn r93211 (2002-03-26). . The special case m == -1022, replace logb() with ilogb().* lib/msun/bsdsrc/b_tgamma.c: . Update comments. Fix comments where needed. . Add float.h to get LDBL_MANT_DIG for weak reference of tgammal to tgamma. . Remove include of "mathimpl.h". It is no longer needed. . Use "math.h" instead of . . Add '#include math_private.h" . Add struct Double from mathimpl.h and include b_log.c and b_exp.c. . Remove forward declarations of neg_gam(), small_gam(), smaller_gam, large_gam() and ratfun_gam() by re-arranging the code to move these function above their first reference. . New minimax coefficients for polynomial in large_gam(). . New splitting of a0 into a0hi nd a0lo, which include additional bits of precision. . Use ansi-C prototype. Remove K&R prototype. . Replace the TRUNC() macro with a simple cast of a double entities to float before assignment (functional changes). . Replace sin(M_PI*z) with sinpi(z) and cos(M_PI*(0.5-z)) with cospi(0.5-z).Submitted by: Steve KarglDifferential Revision: https://reviews.freebsd.org/D33444Reviewed by: pfg List of files: /freebsd-14.2/lib/msun/Makefile

b2e84316 - Use a builtin where possible in msun

Tue, 02 Nov 2021 11:31:17 +0000

Use a builtin where possible in msunSome of the functions in msun can be implemented using a compilerbuiltin function to generate a small number of instructions. Implementthis support in fma, fmax, fmin, and sqrt on arm64.Care must be taken as the builtin can be implemented as a functioncall on some architectures that lack direct support. In these caseswe need to use the original code path.As we don't set errno on failure build with -fno-math-errno so thetoolchain doesn't convert a builtin into a function call when itdetects a failure, e.g. gcc will add a call to sqrt when the inputis negative leading to an infinite loop.Sponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D32801 List of files: /freebsd-14.2/lib/msun/Makefile

046e2d5d - Implementations of cexpl()

Fri, 05 Nov 2021 02:04:01 +0000

Implementations of cexpl()The change implements cexpl() for both ld80 and ld128 architectures.Testing was done on x86_64 and aarch64 systems.Along the way sincos[fl]() use an optimization that reduces the argumentto being done one rather than twice. This optimization actually pointedto a bug in the ld128 version of sincosl(), which is now fixed. Inaddition, the minmax polynomial coefficients for sincosl() have beenupdated.A concise log of the file-by-file changes follows.* include/complex.h: . Add a prototype for cexpl().* lib/msun/Makefile: . Add s_cexpl.c to the build. . Setup a link for cexpl.3 to cexp.3.* lib/msun/Symbol.map: . Expose cexpl symbol in libm shared library.* lib/msun/ld128/s_cexpl.c: * Implementation of cexpl() for 128-bit long double architectures. Tested on an aarch64 system.* lib/msun/ld80/s_cexpl.c: * Implementation of cexpl() for Intel 80-bit long double.* lib/msun/man/cexp.3: . Document cexpl().* lib/msun/man/complex.3: . Add a BUGS section about cpow[fl].* lib/msun/src/s_cexp.c: . Include float.h for weak references on 53-bit long double targets. . Use sincos() to reduce argument reduction cost.* lib/msun/src/s_cexpf.c: . Use sincosf() to reduce argument reduction cost.* lib/msun/src/k_sincosl.h: . Catch up with the new minmax polynomial coefficients for the kernel for the 128-bit cosl() implementation. . BUG FIX: *cs was used where *sn should have been. This means that sinl() was no computed correctly when iy != 0.* lib/msun/src/s_cosl.c: . Include fpmath.h to get access to IEEEl2bits. . Replace M_PI_4 with pio4, a 64-bit or 113-bit approximation for pi / 4.PR: 216862MFC after: 1 week List of files: /freebsd-14.2/lib/msun/Makefile

ca3d8cb0 - lib/msun: Move the files to appropriate locations in the Makefile

Tue, 26 Oct 2021 20:53:51 +0000

lib/msun: Move the files to appropriate locations in the MakefileFixes: dce5f3abed7181cc533ca5edPR: 218514MFC after: 1 week List of files: /freebsd-14.2/lib/msun/Makefile

dce5f3ab - [LIBM] implementations of sinpi[fl], cospi[fl], and tanpi[fl]

Mon, 25 Oct 2021 13:13:52 +0000

[LIBM] implementations of sinpi[fl], cospi[fl], and tanpi[fl]Both IEEE-754 2008 and ISO/IEC TS 18661-4 define the half-cycletrignometric functions cospi, sinpi, and tanpi. The attachedpatch implements cospi[fl], sinpi[fl], and tanpi[fl]. Limitedtesting on the cospi and sinpi reveal a max ULP less than 0.89;while tanpi is more problematic with a max ULP less than 2.01in the interval [0,0.5]. The algorithms used in these functionsare documented in {ks}_cospi.c, {ks}_sinpi.c, and s_tanpi.c.Note. I no longer have access to a system with ld128 andadequate support to compile and test the ld128 implementationsof these functions. Given the almost complete lack of input fromothers on improvements to libm, I doubt that anyone cares. Ifsomeone does care, the ld128 files contain a number of FIXME comments,and in particular, while the polynomial coefficients are givenI did not update the polynomial algorithms to properly use thecoefficients.PR: 218514MFC after: 2 weeks List of files: /freebsd-14.2/lib/msun/Makefile

168234fa - lib/msun: Exclude ignored-pragmas from -Werror

Thu, 15 Apr 2021 15:27:52 +0000

lib/msun: Exclude ignored-pragmas from -WerrorThis avoids build failures due to the clang 12 warning: '#pragma FENV_ACCESS' is not supported on this target - ignoredClang 12 currently emits this warning for all non-x86 architectures.While this can result in incorrect code generation (e.g. on AArch64 someexceptions are not raised as expected), this is a pre-existing issue andwe should not fail the build due to this warning.Reviewed By: dim, emasteMFC after: 1 weekDifferential Revision: https://reviews.freebsd.org/D29743 List of files: /freebsd-14.2/lib/msun/Makefile

bae9fd0b - Only use -fp-exception-behavior=maytrap on x86, for now

Sat, 10 Apr 2021 14:02:49 +0000

Only use -fp-exception-behavior=maytrap on x86, for nowAfter 3b00222f156d, it turns out that clang only supports strictfloating point semantics for SystemZ and x86 at the moment, while forother architectures it is still experimental.Therefore, only use -fp-exception-behavior=maytrap on x86 for now,otherwise this option results in "error: overriding currentlyunsupported use of floating point exceptions on this target[-Werror,-Wunsupported-floating-point-opt]" on other architectures.Fixes: 3b00222f156dPR: 254911MFC after: 1 week List of files: /freebsd-14.2/lib/msun/Makefile

3b00222f - Avoid raising unexpected floating point exceptions in libm

Fri, 09 Apr 2021 23:07:54 +0000

Avoid raising unexpected floating point exceptions in libmWhen using clang with x86_64 CPUs that support AVX, some floating pointtransformations may raise exceptions that would not have been raised bythe original code. To avoid this, use the -fp-exception-behavior=maytrapflag, introduced in clang 10.0.0.In particular, this fixes a number of test failures with ctanhf(3) andctanf(3), when libm is compiled with -mavx. An unexpected FE_INVALIDexception is then raised, because clang emits vdivps instructions toperform certain divides. (The vdivps instruction operates on multiplesingle-precision float operands simultaneously, but the exceptions maybe influenced by unused parts of the XMM registers. In this particularcase, it was calculating 0 / 0, which results in FE_INVALID.)If -fp-exception-behavior=maytrap is specified however, clang usesvdivss instructions instead, which work on one operand, and should notraise unexpected exceptions.Reported by: olivierReviewed by: arichardsonPR: 254911MFC after: 1 weekDifferential Revision: https://reviews.freebsd.org/D29686 List of files: /freebsd-14.2/lib/msun/Makefile

fac6dee9 - Remove tests for obsolete compilers in the build system

Tue, 12 May 2020 15:22:40 +0000

Remove tests for obsolete compilers in the build systemAssume gcc is at least 6.4, the oldest xtoolchain in the ports tree.Assume clang is at least 6, which was in 11.2-RELEASE. Drop conditionsfor older compilers.Reviewed by: imp (earlier version), emaste, jhbMFC after: 2 weeksSponsored by: Dell EMC IsilonDifferential Revision: https://reviews.freebsd.org/D24802 List of files: /freebsd-14.2/lib/msun/Makefile

50b06886 - libm: squelch -Woverflow from gcc6

Fri, 01 Feb 2019 23:15:54 +0000

libm: squelch -Woverflow from gcc6Sponsored by: Dell EMC Isilon List of files: /freebsd-14.2/lib/msun/Makefile

5a4c3b83 - Recommit r336497: Fix powl, cpow, cpowf, and cpowl imports from OpenBSD

Fri, 20 Jul 2018 18:27:30 +0000

Recommit r336497: Fix powl, cpow, cpowf, and cpowl imports from OpenBSDThis is a follow-up to r336299.* lib/msun/Makefile: . Remove polevll.c* lib/msun/ld80/e_powl.c: . Copy contents of polevll.c to here. This is the only consumer of these functions. Make functions 'static inline'. . Make reducl a 'static inline' function.* lib/msun/man/exp.3: . Remove BUGS section that no longer applies.* lib/msun/src/math_private.h: . Remove prototypes of __p1evll() and __polevll()* lib/msun/src/s_cpow.c:* lib/msun/src/s_cpowf.c:* lib/msun/src/s_cpowl.c . Include math_private.h. . Use the CMPLX macro from either C99 or math_private.h (depends on compiler support) instead of the problematic use of complex I.Submitted by: Steve Kargl PR: 229876MFC after: 1 week List of files: /freebsd-14.2/lib/msun/Makefile

c422fbac - Revert r336497 for now, as it breaks on architectures using gcc, with:

Thu, 19 Jul 2018 19:07:25 +0000

Revert r336497 for now, as it breaks on architectures using gcc, with:cc1: warnings being treated as errors/usr/src/lib/msun/src/s_cpow.c: In function 'cpow':/usr/src/lib/msun/src/s_cpow.c:63: warning: implicit declaration of function 'CMPLX' List of files: /freebsd-14.2/lib/msun/Makefile

2ae9055f - Fix powl, cpow, cpowf, and cpowl imports from OpenBSD

Thu, 19 Jul 2018 18:44:10 +0000

Fix powl, cpow, cpowf, and cpowl imports from OpenBSDThis is a follow-up to r336299.* lib/msun/Makefile: . Remove polevll.c* lib/msun/ld80/e_powl.c: . Copy contents of polevll.c to here. This is the only consumer of these functions. Make functions 'static inline'. . Make reducl a 'static inline' function.* lib/msun/man/exp.3: . Remove BUGS section that no longer applies.* lib/msun/src/math_private.h: . Remove prototypes of __p1evll() and __polevll()* lib/msun/src/s_cpow.c:* lib/msun/src/s_cpowf.c:* lib/msun/src/s_cpowl.c . Use the CMPLX macro from either C99 or math_private.h (depends of compiler support) instead of the problematic use of complex I.Submitted by: Steve Kargl PR: 229876MFC after: 1 week List of files: /freebsd-14.2/lib/msun/Makefile