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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-10 05:10:34 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-10 05:10:34 +0400 |
commit | 82abb273d838318424644d8f02825db0fbbd400a (patch) | |
tree | e1ea8a92db4ba68f347249986ffe3a25ffbf8219 /arch/mips/math-emu/sp_sqrt.c | |
parent | 9b651cc2277b5e4883012ebab0fea2bcda4cbafa (diff) | |
parent | f8647b506d7116a1a3accd8d618184096e85f50b (diff) | |
download | linux-82abb273d838318424644d8f02825db0fbbd400a.tar.xz |
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
- three fixes for 3.15 that didn't make it in time
- limited Octeon 3 support.
- paravirtualization support
- improvment to platform support for Netlogix SOCs.
- add support for powering down the Malta eval board in software
- add many instructions to the in-kernel microassembler.
- add support for the BPF JIT.
- minor cleanups of the BCM47xx code.
- large cleanup of math emu code resulting in significant code size
reduction, better readability of the code and more accurate
emulation.
- improvments to the MIPS CPS code.
- support C3 power status for the R4k count/compare clock device.
- improvments to the GIO support for older SGI workstations.
- increase number of supported CPUs to 256; this can be reached on
certain embedded multithreaded ccNUMA configurations.
- various small cleanups, updates and fixes
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits)
MIPS: IP22/IP28: Improve GIO support
MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX
DEC: Document the R4k MB ASIC mini interrupt controller
DEC: Add self as the maintainer
MIPS: Add microMIPS MSA support.
MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents.
MIPS: Replace obsolete strict_strto call with kstrto
MIPS: BFP: Simplify code slightly.
MIPS: Call find_vma with the mmap_sem held
MIPS: Fix 'write_msa_##' inline macro.
MIPS: Fix MSA toolchain support detection.
mips: Update the email address of Geert Uytterhoeven
MIPS: Add minimal defconfig for mips_paravirt
MIPS: Enable build for new system 'paravirt'
MIPS: paravirt: Add pci controller for virtio
MIPS: Add code for new system 'paravirt'
MIPS: Add functions for hypervisor call
MIPS: OCTEON: Add OCTEON3 to __get_cpu_type
MIPS: Add function get_ebase_cpunum
MIPS: Add minimal support for OCTEON3 to c-r4k.c
...
Diffstat (limited to 'arch/mips/math-emu/sp_sqrt.c')
-rw-r--r-- | arch/mips/math-emu/sp_sqrt.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/arch/mips/math-emu/sp_sqrt.c b/arch/mips/math-emu/sp_sqrt.c index fed20175f5fb..b7c098a86f95 100644 --- a/arch/mips/math-emu/sp_sqrt.c +++ b/arch/mips/math-emu/sp_sqrt.c @@ -5,8 +5,6 @@ * MIPS floating point support * Copyright (C) 1994-2000 Algorithmics Ltd. * - * ######################################################################## - * * This program is free software; you can distribute it and/or modify it * under the terms of the GNU General Public License (Version 2) as * published by the Free Software Foundation. @@ -18,15 +16,12 @@ * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ - #include "ieee754sp.h" -ieee754sp ieee754sp_sqrt(ieee754sp x) +union ieee754sp ieee754sp_sqrt(union ieee754sp x) { int ix, s, q, m, t, i; unsigned int r; @@ -35,34 +30,38 @@ ieee754sp ieee754sp_sqrt(ieee754sp x) /* take care of Inf and NaN */ EXPLODEXSP; - CLEARCX; + ieee754_clearcx(); FLUSHXSP; /* x == INF or NAN? */ switch (xc) { case IEEE754_CLASS_QNAN: /* sqrt(Nan) = Nan */ - return ieee754sp_nanxcpt(x, "sqrt"); + return ieee754sp_nanxcpt(x); + case IEEE754_CLASS_SNAN: - SETCX(IEEE754_INVALID_OPERATION); - return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt"); + ieee754_setcx(IEEE754_INVALID_OPERATION); + return ieee754sp_nanxcpt(ieee754sp_indef()); + case IEEE754_CLASS_ZERO: /* sqrt(0) = 0 */ return x; + case IEEE754_CLASS_INF: if (xs) { /* sqrt(-Inf) = Nan */ - SETCX(IEEE754_INVALID_OPERATION); - return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt"); + ieee754_setcx(IEEE754_INVALID_OPERATION); + return ieee754sp_nanxcpt(ieee754sp_indef()); } /* sqrt(+Inf) = Inf */ return x; + case IEEE754_CLASS_DNORM: case IEEE754_CLASS_NORM: if (xs) { /* sqrt(-x) = Nan */ - SETCX(IEEE754_INVALID_OPERATION); - return ieee754sp_nanxcpt(ieee754sp_indef(), "sqrt"); + ieee754_setcx(IEEE754_INVALID_OPERATION); + return ieee754sp_nanxcpt(ieee754sp_indef()); } break; } @@ -99,12 +98,12 @@ ieee754sp ieee754sp_sqrt(ieee754sp x) } if (ix != 0) { - SETCX(IEEE754_INEXACT); + ieee754_setcx(IEEE754_INEXACT); switch (ieee754_csr.rm) { - case IEEE754_RP: + case FPU_CSR_RU: q += 2; break; - case IEEE754_RN: + case FPU_CSR_RN: q += (q & 1); break; } |