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* Restore the longer form of the _Generic. The short form does not work in C++.theraven2013-07-291-2/+11
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* Reenable the isnan(double) / isinf(double) declarations when targeting C89 + ↵theraven2013-07-291-0/+15
| | | | SUSv2 mode.
* Cleaner support for type qualifiers.theraven2013-07-131-11/+2
| | | | Submitted by: Pasi Parviainen
* Ensure that the _Generic() macro in math.h works with qualified types.theraven2013-07-131-17/+26
| | | | tgmath.h contains the same bugs and so should be fixed in the same way.
* Fix the build with C++ where __builtin_types_compatible_p is not allowed.theraven2013-07-121-2/+3
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* Fix some typoes in math.h cleanup.theraven2013-07-111-3/+3
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* Cleanups to math.h that prevent namespace conflicts with C++.theraven2013-07-111-28/+49
| | | | | Reviewed by: bde MFC after: 3 days
* Make the order of operations for lib/msun more clear.eadler2013-06-242-2/+2
| | | | | | | Tested with md5 sum of object code Reported by: swildner@DragonFlyBSD.org Submitted by: bde
* Add implementations of acoshl(), asinhl(), and atanhl(). This is adas2013-06-1012-48/+344
| | | | merge of the work done by bde and myself.
* Style fixes.das2013-06-054-54/+58
| | | | Submitted by: bde
* Add man links for expl(3) and expm1l(3).das2013-06-041-2/+2
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* Change a comma to a semicolon.kargl2013-06-031-3/+2
| | | | | | Remove a blank line that crept into the declarations. Fix a comment to show a sign on a NaN.
* ld80 and ld128 implementations of expm1l(). This code started lifekargl2013-06-036-4/+373
| | | | | | | | | | | | | | as a fairly faithful implementation of the algorithm found in PTP Tang, "Table-driven implementation of the Expm1 function in IEEE floating-point arithmetic," ACM Trans. Math. Soft., 18, 211-222 (1992). Over the last 18-24 months, the code has under gone significant optimization and testing. Reviewed by: bde Obtained from: bde (most of the optimizations)
* Fix two comments that got lost in the disentanglement of the larger diff.kargl2013-06-031-1/+6
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* ld80/s_expl.c:kargl2013-06-032-8/+11
| | | | | | | | | | | | | | * Use integral numerical constants, and let the compiler do the conversion to long double. ld128/s_expl.c: * Use integral numerical constants, and let the compiler do the conversion to long double. * Use the ENTERI/RETURNI macros, which are no-ops on ld128. This however makes the ld80 and ld128 identical. Reviewed by: bde (as part of larger diff)
* Micro-optimization: move the unary mius operator to operatekargl2013-06-032-3/+3
| | | | | | on a literal constant. Obtained from: bde
* Add a comment to note that bde supplied most, if not all,kargl2013-06-031-0/+2
| | | | of the optimizations.
* ld80/s_expl.c:kargl2013-06-032-13/+9
| | | | | | | | | | | | | | | | * In the special case x = -Inf or -NaN, use a micro-optimization to eliminate the need to access u.xbits.man. * Fix an off-by-one for small arguments |x| < 0x1p-65. ld128/s_expl.c: * In the special case x = -Inf or -NaN, use a micro-optimization to eliminate the need to access u.xbits.manh and u.xbits.manl. * Fix an off-by-one for small arguments |x| < 0x1p-114. Obtained from: bde
* ld80/s_expl.c:kargl2013-06-032-27/+55
| | | | | | | | | | | | | | * Update the evaluation of the polynomial. This allows the removal of the now unused variables t23 and t45. ld128/s_expl.c: * Update the evaluation of the polynomial and the intermediate result t. This update allows several numerical constants to be written as double rather than long double constants. Update the constants as appropriate. Obtained from: bde
* Rename a few P2, P3, ... coefficients to A2, A3, ... missed inkargl2013-06-031-3/+3
| | | | my previous commit.
* Update a comment to reflect that we are using an endpoint ofkargl2013-06-032-2/+2
| | | | an interval instead of a midpoint.
* Add a u suffix to the IEEEl2bits unions o_threshold and u_threshold,kargl2013-06-031-4/+7
| | | | | | | and use macros to access the e component of the unions. This allows the portions of the code in ld80 to be identical to the ld128 code. Obtained from: bde
* Introduce the macro LOG2_INTERVAL, which is log2(number of intervals).kargl2013-06-032-2/+5
| | | | | | | Use the macroi as a micro-optimization to convert a subtraction and division to a shift. Obtained from: bde
* Whitespace.kargl2013-06-032-4/+4
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* * Rename the polynomial coefficients from P2, P3, ... to A2, A3, ....kargl2013-06-032-25/+24
| | | | | | | | | | The names now coincide with the name used in PTP Tang's paper. * Rename the variable from s to tbl to better reflect that this is a table, and to be consistent with the naming scheme in s_exp2l.c Reviewed by: bde (as part of larger diff)
* * Style(9). Start non-Copyright fancy formatted comments with /**.kargl2013-06-031-1/+1
| | | | Reviewed by: bde (as part of larger diff)
* ld80/s_expl.c:kargl2013-06-032-2/+2
| | | | | | | | | | | * Update Copyright years to include 2013. ld128/s_expl.c: * Correct and update Copyright years. This code originated from the ld80 version, so it should reflect the same time period. Reviewed by: bde (as part of larger diff)
* Add logl, log2l, log10l, and log1pl.das2013-06-0311-18/+1809
| | | | Submitted by: bde
* I'm happy to finally commit stephen@'s implementations of cacos,das2013-05-308-15/+1186
| | | | | | | | cacosh, casin, casinh, catan, and catanh. Thanks to stephen@ and bde@ for working on these. Submitted by: stephen@ Reviewed by: bde
* Style(9)kargl2013-05-271-1/+1
| | | | | Approved by: das (implicit) Reported by: jh
* * Update polynomial coefficients.kargl2013-05-271-33/+30
| | | | | | | | * Use ENTERI/RETURNI to allow the use of FP_PE on i386 target. Reviewed by: das (and bde a long time ago) Approved by: das (mentor) Obtained from: bde (polynomial coefficients)
* Fix some regressions caused by the switch from gcc to clang. The fixesdas2013-05-2720-40/+53
| | | | | | | | | | are workarounds for various symptoms of the problem described in clang bugs 3929, 8100, 8241, 10409, and 12958. The regression tests did their job: they failed, someone brought it up on the mailing lists, and then the issue got ignored for 6 months. Oops. There may still be some regressions for functions we don't have test coverage for yet.
* Merge the 386 and amd64 versions of the fenv.h, to make cc -m32kib2013-04-213-286/+164
| | | | | | | compilations which use fenv.h work. Reviewed by: tjil Sponsored by: The FreeBSD Foundation
* Only define isnan, isnanf, __isnan and __isnanf in libc.so, not indim2012-11-101-3/+4
| | | | | | | | | | | libc.a and libc_p.a. In addition, define isnan in libm.a and libm_p.a, but not in libm.so. This makes it possible to statically link executables using both isnan and isnanf with libc and libm. Tested by: kargl MFC after: 1 week
* Fix typo; s/ouput/outputkevlo2012-11-071-1/+1
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* Revert r241756imp2012-10-221-62/+0
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* Revert r241755imp2012-10-221-51/+0
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* Document the method used to compute expf. Taken from exp, withimp2012-10-191-0/+62
| | | | changes to reflect differences in computation between the two.
* Document the methods used to compute logf. Taken and edited from theimp2012-10-191-0/+51
| | | | | double version, with adaptations for the differences between it and the float version.
* mdoc: avoid nested displays.joel2012-10-141-32/+35
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* * Update the comment that explains the choice of values in thekargl2012-10-131-6/+7
| | | | | | | | | | table and the requirement on trailing zero bits. * Remove the __aligned() compiler directives as these were found to have a negative effect on the produced code. Submitted by: bde Approved by: das (mentor)
* * src/math_private.h:kargl2012-09-292-7/+11
| | | | | | | | | | | | | | | . Change the API for the LD80C by removing the explicit passing of the sign bit. The sign can be determined from the last parameter of the macro. . On i386, load long double by bit manipulations to work around at least a gcc compiler issue. On non-i386 ld80 architectures, use a simple assignment. * ld80/s_expl.c: . Update the only consumer of LD80C. Submitted by: bde Approved by: das (mentor)
* * ld80/s_expl.c:kargl2012-09-232-9/+6
| | | | | | | | | | | | | | | | . Fix the threshold for expl(x) where |x| is small. . Also update the previously incorrect comment to match the new threshold. * ld128/s_expl.c: . Re-order logic in exceptional cases to match the logic used in other long double functions. . Fix the threshold for expl(x) where is |x| is small. . Also update the previously incorrect comment to match the new threshold. Submitted by: bde Approved by: das (mentor)
* Fix whitespace issue.kargl2012-09-231-1/+1
| | | | Approved by: das (mentor, implicit)
* * ld80/s_expl.c:kargl2012-09-232-13/+17
| | | | | | | | | | | | | | | | | . Guard a comment from reformatting by indent(1). . Re-order variables in declarations to alphabetical order. . Remove a banal comment. * ld128/s_expl.c: . Add a comment to point to ld80/s_expl.c for implementation details. . Move the #define of INTERVAL to reduce the diff with ld80/s_expl.c. . twom10000 does not need to be volatile, so move its declaration. . Re-order variables in declarations to alphabetical order. . Add a comment that describes the argument reduction. . Remove the same banal comment found in ld80/s_expl.c. Reviewed by: bde Approved by: das (mentor)
* * Update the lookup table to use 53-bit high and low values.kargl2012-09-231-131/+134
| | | | | | | | | | | | | Also, update the comment to describe the choice of using a high and low decomposition of 2^(i/INTERNVAL) for 0 <= i <= INTERVAL in preparation for an implementation of expm1l. * Move the #define of INTERVAL above the comment, because the comment refers to INTERVAL. Reviewed by: bde Approved by: das (mentor)
* * Use ENTERI() and RETURNI() to toggle the rounding precision ifkargl2012-09-223-6/+21
| | | | | | | | | necessary, so that cosl(), sinl() and tanl() work on i386 even for naive callers. Suggested by: bde Reviewed by: bde Approved by: das (mentor)
* * Make STRICT_ALIGN() work for doubles as well as for floats. Thiskargl2012-09-221-2/+2
| | | | | | | | | | | | | | | only affects i386. The double case was intentionally left broken as an optimization, but we are getting closer to supporting applications and/or kernels that change the (FreeBSD i386) default rounding precision from FP_PD to FP_PE and never change it back, and this requires the STRICT_ALIGN()s that were added to support FP_PE to actually work in all precisions. * Remove an extraneous semicolon at the end of a macro that was supposed to be function-like. Submitted by: bde Approved by: das (mentor)
* Optimise i387 trigonometric functions. Replace "andw 0x400,%ax \ jnz" withtijl2012-09-163-16/+16
| | | | "sahf \ jp", "fprem1" with "fprem" and "fstsw %ax" with "fnstsw %ax".
* Minor mdoc fix.joel2012-09-111-5/+5
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