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11d6e2f237
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213 Commits

Author SHA1 Message Date
Siddhesh Poyarekar
11d6e2f237 Format mplog.c 2013-02-27 11:24:45 +05:30
Siddhesh Poyarekar
45f058844c Another tweak to the multiplication algorithm 
Reduce the formula to calculate mantissa so that we reduce the net
number of multiplications performed.
 2013-02-26 21:28:16 +05:30
Siddhesh Poyarekar
2236d3595a Don't duplicate mpone and mptwo 2013-02-26 15:15:27 +05:30
Siddhesh Poyarekar
2a983a2e0a Remove commented declarations 2013-02-25 18:11:14 +05:30
Siddhesh Poyarekar
e69804d14e Use long wherever possible in mpa.c 
Using long throughout like powerpc does is beneficial since it reduces
the need to switch to 32-bit instructions.  It gives a very minor
performance improvement.
 2013-02-25 16:43:03 +05:30
Siddhesh Poyarekar
2f22a1e8dd Format slowexp.c 2013-02-25 16:13:35 +05:30
Siddhesh Poyarekar
8930ddc705 Reformat slowpow.c 2013-02-25 16:08:38 +05:30
Siddhesh Poyarekar
dc60cb110b Remove commented code 2013-02-25 14:51:57 +05:30
Siddhesh Poyarekar
bab8a695ee Fix whitespace differences between generic and powerpc mpa.c 2013-02-21 14:31:42 +05:30
Siddhesh Poyarekar
20cd7fb3ae Copy comment about inner loop from powerpc mpa.c to the default one 2013-02-20 18:56:20 +05:30
Siddhesh Poyarekar
22af19f9fb Don't require LIM to determine loop end in __sqr 2013-02-16 00:15:57 +05:30
Siddhesh Poyarekar
4709fe7602 Use intermediate variable to compute exponent in __mul 2013-02-16 00:09:29 +05:30
Siddhesh Poyarekar
2d0e0f29f8 Fix determination of lower precision in __mul 2013-02-15 23:56:20 +05:30
Siddhesh Poyarekar
f414520d3c Use __sqr instead of __mul wherever possible 2013-02-14 11:39:14 +05:30
Siddhesh Poyarekar
d6752ccd69 New __sqr function as a faster special case of __mul 2013-02-14 10:31:09 +05:30
Siddhesh Poyarekar
c2af38aa76 Remove unnecessary factorial array 
kf is n! at the end of the loop, so storing the values is unnecessary.
 2013-02-13 17:19:07 +05:30
Siddhesh Poyarekar
4e92d59e26 Better exp polynomial 
The lesser the __mul calls, the better it is for performance.
 2013-02-13 14:49:50 +05:30
Siddhesh Poyarekar
909279a5cf Optimized mp multiplication 
Don't bother multiplying zeroes since that only wastes cycles.
 2013-02-13 14:16:23 +05:30
Siddhesh Poyarekar
bdf028142e Clean up add_magnitudes and sub_magnitudes 2013-02-13 13:55:29 +05:30
Roland McGrath
f1d70dad53 Remove lots of inline keywords. 2013-02-07 14:44:18 -08:00
Siddhesh Poyarekar
caa99d06e7 Simplify calculation of 2^-m in __mpexp 2013-01-18 11:18:13 +05:30
Siddhesh Poyarekar
d3b9ea6148 Remove unnecessary multiplication with RADIXI 2013-01-18 11:14:34 +05:30
Siddhesh Poyarekar
a897655d7b Fix header comment 2013-01-17 15:05:22 +05:30
Siddhesh Poyarekar
f93a8d1569 Consolidate constant defines into mpa.h 2013-01-16 16:06:48 +05:30
Siddhesh Poyarekar
dd930cc571 Fix the value of TWO 2013-01-16 14:53:53 +05:30
David S. Miller
438ebba294 Use libc_fe*() in 32-bit nearbyint() 
* sysdeps/ieee754/dbl-64/s_nearbyint.c (__nearbyint): Use
	libc_feholdexcept and libc_fesetenv.
 2013-01-15 20:32:13 -08:00
Siddhesh Poyarekar
2a91b5735a Minor tweak to mp multiplication 
Add a local variable to remove extra copies to/from memory in the Z
array.
 2013-01-14 21:53:48 +05:30
Siddhesh Poyarekar
1066a53440 Fix code formatting in mpa.c 
This includes the overridden mpa.c in power4.
 2013-01-14 21:53:43 +05:30
Siddhesh Poyarekar
7490eb81ae Fix formatting in mpexp.c 2013-01-10 14:59:18 +05:30
Siddhesh Poyarekar
751b85f795 Make __mpexp_twomm1 an array of doubles 
Cleanup to get rid of the `number` muck which is not necessary here.
 2013-01-10 14:59:18 +05:30
Siddhesh Poyarekar
950c99ca90 Update comments in mpa.c 
Fixed comment style and clearer wording in some cases.
 2013-01-09 19:07:15 +05:30
Siddhesh Poyarekar
fffb407f46 Remove unused __cr and __cpymn 2013-01-04 22:52:12 +05:30
Siddhesh Poyarekar
6420d207bb Fix code formatting 2013-01-04 15:57:13 +05:30
Siddhesh Poyarekar
a9e48ab40e Clean up comment for MP_NO 2013-01-04 15:42:09 +05:30
Siddhesh Poyarekar
b783726459 Remove some commented code 2013-01-04 15:30:34 +05:30
Siddhesh Poyarekar
f8af25d218 Remove commented declarations 2013-01-04 15:10:00 +05:30
Siddhesh Poyarekar
302913e17e Remove argument variable name from function declaration 2013-01-04 14:54:46 +05:30
Joseph Myers
568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Siddhesh Poyarekar
0f5477af5d Fix values in __mpexp_twomm1 2013-01-02 17:43:35 +05:30
Siddhesh Poyarekar
44e0d4c20c Split mantissa calculation loop and add branch prediction 2013-01-02 11:44:13 +05:30
Siddhesh Poyarekar
4d55b4e596 Add assert for potential access beyond array bounds in m1np 
The mpexp code has an access into m1np:

  for (i=n-1; i>0; i--,n--) { if (m1np[i][p]+m2>0) break; }

which could break for p >= 18 or i >= 7.  Fortunately this code is
never called due to the way the exp function is implemented since
values having exponent less than -55 return 1.0.  Make sure that if it
gets called in future, it is trapped.
 2013-01-02 11:33:11 +05:30
Siddhesh Poyarekar
da08f647d5 Move more constants into static variables 
Code cleanup.
 2013-01-02 10:07:50 +05:30
Joseph Myers
f4cf5f2d8b Add script to update copyright notices and reformat some to facilitate its use. 2013-01-01 16:29:10 +00:00
Siddhesh Poyarekar
18ea052c3e Favour normal numbers 2012-12-31 16:05:13 +05:30
Siddhesh Poyarekar
085ec079e3 Demystify the magic number 134217729.0 
The number 134217729.0 gets used in various places in e_pow.c but
there is no explanation of what that number is.  Add that explanation.
 2012-12-29 06:56:04 +05:30
Siddhesh Poyarekar
d63f73be34 Remove unnecessary variable mptwoim1 
Code cleanup.
 2012-12-28 19:02:01 +05:30
Siddhesh Poyarekar
6d9f97e1f2 Replace more constants with their values 
Code cleanup.
 2012-12-28 18:53:17 +05:30
Siddhesh Poyarekar
99136f8202 Replace constants with preprocessor defines 
libm Code cleanup.
 2012-12-28 09:40:10 +05:30
Siddhesh Poyarekar
31a7fe5ca9 Remove redundant __mpexp_nn 
It's an array that stores integral float values of the offset.
 2012-12-27 20:43:55 +05:30
Siddhesh Poyarekar
b76eb5f076 Move mpone out to a global const 
Code cleanup.
 2012-12-27 20:43:24 +05:30