diff options
| author | Mystery Man <unknown@mandriva.org> | 2003-08-20 07:37:27 +0000 |
|---|---|---|
| committer | Mystery Man <unknown@mandriva.org> | 2003-08-20 07:37:27 +0000 |
| commit | 7f2ac73888b8ef372ea597049981b27e7d810ac2 (patch) | |
| tree | 354132889b63bbe5f446cb82869b3c3367135a80 /mdk-stage1/dietlibc/i386/cosh.S | |
| parent | 327bd24f8e4291bd1882de1990dd7339f781a9cb (diff) | |
| download | drakx-7f2ac73888b8ef372ea597049981b27e7d810ac2.tar drakx-7f2ac73888b8ef372ea597049981b27e7d810ac2.tar.gz drakx-7f2ac73888b8ef372ea597049981b27e7d810ac2.tar.bz2 drakx-7f2ac73888b8ef372ea597049981b27e7d810ac2.tar.xz drakx-7f2ac73888b8ef372ea597049981b27e7d810ac2.zip | |
This commit was manufactured by cvs2svn to create branch 'MDKC_1_0'.topic/MDKC_1_0
Diffstat (limited to 'mdk-stage1/dietlibc/i386/cosh.S')
| -rw-r--r-- | mdk-stage1/dietlibc/i386/cosh.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/cosh.S b/mdk-stage1/dietlibc/i386/cosh.S new file mode 100644 index 000000000..f6a33704d --- /dev/null +++ b/mdk-stage1/dietlibc/i386/cosh.S @@ -0,0 +1,29 @@ + +.text +.type cosh,@function +.global cosh + +cosh: # note: exp(x) = 2^(x*log2(e)) + fldl2e + fmull 4(%esp) # x*log2(e) + fld %st(0) # x*log2(e) x*log2(e) + frndint # int(x*log2(e)) x*log2(e) + fxch # x*log2(e) int(x*log2(e)) + fsub %st(1),%st(0) # frac(x*log2(e)) int(x*log2(e)) + f2xm1 # 2^(fract(x*log2(e)))-1 int(x*log2(e)) + fld1 # 1 2^(fract(x*log2(e)))-1 int(x*log2(e)) + faddp %st(0),%st(1) # 2^(fract(x*log2(e))) int(x*log2(e)) + fscale # 2^(x*log2(e)) int(x*log2(e)) + fstp %st(1) # 2^(x*log2(e)) + +# now we have y = exp(x), but cosh(x) = (y + 1/y) * 0.5 + + fld1 + fdiv %st(1),%st(0) + faddp + fmuls __half + ret + +.Lende: + +.size cosh,.ende-cosh |