qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
glibc/sysdeps
History
Paul Clarke a51bc4fe9d Use float in e_sqrt.c 
The type used within e_sqrt.c(__slow_ieee754_sqrtf) was, unnecessarily and
likely inadvertently, double.  float is not only appropriate, but also
more efficient, avoiding the need for the compiler to emit a
round-to-single-precision instruction.

This is the difference in compiled code:
 0000000000000000 <__ieee754_sqrtf>:
    0:  2c 08 20 ec     fsqrts  f1,f1
-   4:  18 08 20 fc     frsp    f1,f1
-   8:  20 00 80 4e     blr
+   4:  20 00 80 4e     blr

(Found by Anton Blanchard.)
 		2019-02-11 12:03:23 -02:00
..
aarch64 aarch64: Optimized memchr specific to AmpereComputing emag 2019-02-01 08:14:21 -05:00
alpha alpha: Fix __remqu corrupting $f3 register 2019-01-24 10:28:13 -08:00
arm arm: Use "nr" constraint for Systemtap probes [BZ #24164] 2019-02-05 13:01:08 +01:00
csky Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
generic Move generic <bits/unistd_ext.h> to a more regular location 2019-02-08 21:06:11 +01:00
gnu Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
hppa Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
htl hurd: advertise *_setpshared as not supported 2019-01-02 22:21:34 +01:00
hurd Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
i386 Fix handling of collating elements in fnmatch (bug 17396, bug 16976) 2019-02-04 15:45:02 +01:00
ia64 Fix a few typos in comments 2019-01-12 13:44:51 +00:00
ieee754 Avoid "inline" after return type in function definitions. 2019-02-06 17:16:43 +00:00
init_array Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
m68k Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
mach hurd: Check at_flags passed to faccessat 2019-01-22 22:47:10 +01:00
microblaze Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
mips Update MIPS libm-test-ulps. 2019-01-02 17:25:33 +00:00
nios2 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
nptl nptl: Avoid fork handler lock for async-signal-safe fork [BZ #24161] 2019-02-08 12:46:19 +01:00
posix Cleanup clock_*time includes 2019-02-01 12:24:52 +00:00
powerpc Use float in e_sqrt.c 2019-02-11 12:03:23 -02:00
pthread Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
riscv RISC-V: Update nofpu ULPs 2019-01-24 13:55:05 -05:00
s390 S390: Fix introduction of __wmemcmp and weak wmemcmp symbols. 2019-02-06 09:10:31 +01:00
sh Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
sparc soft-fp: Properly check _FP_W_TYPE_SIZE [BZ #24066] 2019-01-07 09:04:39 -08:00
unix Linux: Add gettid system call wrapper [BZ #6399] 2019-02-08 11:27:55 +01:00
wordsize-32 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
wordsize-64 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
x86 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
x86_64 Fix handling of collating elements in fnmatch (bug 17396, bug 16976) 2019-02-04 15:45:02 +01:00