src/lib/libc/quad, branch release/13.4.0

Remove $FreeBSD$: one-line sh pattern

2023-08-23T17:43:30Z

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/ Similar commit in main: (cherry picked from commit d0b2dbfa0ecf)

Remove $FreeBSD$: one-line .c pattern

2023-08-23T17:43:26Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/ Similar commit in main: (cherry picked from commit 1d386b48a555)

Remove $FreeBSD$: one-line .h pattern

2023-08-23T17:43:22Z

Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/ Similar commit in main: (cherry picked from commit 42b388439bd3)

qdivrem: Predict division by zero as false.

2022-10-12T15:53:21Z

Division by zero triggers an arithmetic exception and should not be very common. Predict this. No functional change intended. Sponsored by: NVIDIA Networking (cherry picked from commit 1024bb26337bdc6679af477977247e9155d502bc)

Add casts and L suffixes to libc quad support, to work around various

2020-02-17T20:14:59Z

-Werror warnings from clang 10.0.0, such as: lib/libc/quad/fixdfdi.c:57:12: error: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Werror,-Wimplicit-int-float-conversion] if (x >= QUAD_MAX) ~~ ^~~~~~~~ /usr/obj/usr/src/powerpc.powerpc/tmp/usr/include/sys/limits.h:89:19: note: expanded from macro 'QUAD_MAX' #define QUAD_MAX (__QUAD_MAX) /* max value for a quad_t */ ^~~~~~~~~~ /usr/obj/usr/src/powerpc.powerpc/tmp/usr/include/machine/_limits.h:91:20: note: expanded from macro '__QUAD_MAX' #define __QUAD_MAX __LLONG_MAX /* max value for a quad_t */ ^~~~~~~~~~~ /usr/obj/usr/src/powerpc.powerpc/tmp/usr/include/machine/_limits.h:75:21: note: expanded from macro '__LLONG_MAX' #define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ ^~~~~~~~~~~~~~~~~~~~ and many instances of: lib/libc/quad/fixunsdfdi.c:73:17: error: shift count >= width of type [-Werror,-Wshift-count-overflow] toppart = (x - ONE_HALF) / ONE; ^~~~~~~~ lib/libc/quad/fixunsdfdi.c:45:19: note: expanded from macro 'ONE_HALF' #define ONE_HALF (ONE_FOURTH * 2.0) ^~~~~~~~~~ lib/libc/quad/fixunsdfdi.c:44:23: note: expanded from macro 'ONE_FOURTH' #define ONE_FOURTH (1 << (LONG_BITS - 2)) ^ ~~~~~~~~~~~~~~~ lib/libc/quad/fixunsdfdi.c:73:29: error: shift count >= width of type [-Werror,-Wshift-count-overflow] toppart = (x - ONE_HALF) / ONE; ^~~ lib/libc/quad/fixunsdfdi.c:46:15: note: expanded from macro 'ONE' #define ONE (ONE_FOURTH * 4.0) ^~~~~~~~~~ lib/libc/quad/fixunsdfdi.c:44:23: note: expanded from macro 'ONE_FOURTH' #define ONE_FOURTH (1 << (LONG_BITS - 2)) ^ ~~~~~~~~~~~~~~~

Revert r351078, r351085: stand/quad.h eviction

2019-08-15T17:15:32Z

It did not go well; further examination is required...

libc quad.h: one last _STANDALONE correction

2019-08-15T16:28:05Z

stand: kick out quad.h

2019-08-15T15:47:48Z

Use quad.h from libc instead for the time being. This reduces the number of nearly-identical-quad.h we have in tree to two with only minor changes. Prototypes for some *sh*di3 have been added to match the copy in libkern. The differences between the two are likely few enough that they can perhaps be merged with little additional effort to bring us down to 1. MFC after: 3 days

ANSIfy libc/quad

2018-10-21T00:20:40Z

Some of these routines exist in both lib/libc/quad/ and sys/libkern/. r325988 ANSIfied sys/libkern. Update libc/quad to match. PR: 223641 Reported by: bde Sponsored by: The FreeBSD Foundation

General further adoption of SPDX licensing ID tags.

2017-11-20T19:49:47Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.