1. 17 8月, 2020 1 次提交
  2. 12 3月, 2015 1 次提交
    • S
      math: add dummy implementations of 128 bit long double functions · f4e4632a
      Szabolcs Nagy 提交于
      This is in preparation for the aarch64 port only to have the long
      double math symbols available on ld128 platforms. The implementations
      should be fixed up later once we have proper tests for these functions.
      
      Added bigendian handling for ld128 bit manipulations too.
      f4e4632a
  3. 05 9月, 2013 1 次提交
  4. 17 12月, 2012 1 次提交
    • S
      math: use 0x1p-120f and 0x1p120f for tiny and huge values · c6383b7b
      Szabolcs Nagy 提交于
      previously 0x1p-1000 and 0x1p1000 was used for raising inexact
      exception like x+tiny (when x is big) or x+huge (when x is small)
      
      the rational is that these float consts are large enough
      (0x1p-120 + 1 raises inexact even on ld128 which has 113 mant bits)
      and float consts maybe smaller or easier to load on some platforms
      (on i386 this reduced the object file size by 4bytes in some cases)
      c6383b7b
  5. 12 12月, 2012 1 次提交
    • S
      math: rewrite inverse hyperbolic functions to be simpler/smaller · 482ccd2f
      Szabolcs Nagy 提交于
      modifications:
      * avoid unsigned->signed integer conversion
      * do not handle special cases when they work correctly anyway
      * more strict threshold values (0x1p26 instead of 0x1p28 etc)
      * smaller code, cleaner branching logic
      * same precision as the old code:
          acosh(x) has up to 2ulp error in [1,1.125]
          asinh(x) has up to 1.6ulp error in [0.125,0.5], [-0.5,-0.125]
          atanh(x) has up to 1.7ulp error in [0.125,0.5], [-0.5,-0.125]
      482ccd2f
  6. 20 3月, 2012 1 次提交
    • N
      code cleanup of named constants · 0cbb6547
      nsz 提交于
      zero, one, two, half are replaced by const literals
      The policy was to use the f suffix for float consts (1.0f),
      but don't use suffix for long double consts (these consts
      can be exactly represented as double).
      0cbb6547
  7. 13 3月, 2012 1 次提交
    • R
      first commit of the new libm! · b69f695a
      Rich Felker 提交于
      thanks to the hard work of Szabolcs Nagy (nsz), identifying the best
      (from correctness and license standpoint) implementations from freebsd
      and openbsd and cleaning them up! musl should now fully support c99
      float and long double math functions, and has near-complete complex
      math support. tgmath should also work (fully on gcc-compatible
      compilers, and mostly on any c99 compiler).
      
      based largely on commit 0376d44a890fea261506f1fc63833e7a686dca19 from
      nsz's libm git repo, with some additions (dummy versions of a few
      missing long double complex functions, etc.) by me.
      
      various cleanups still need to be made, including re-adding (if
      they're correct) some asm functions that were dropped.
      b69f695a