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math: Remove acoshf fma usage 

The fma is not strickly required to provide correctly rounded and
it helps on !__FP_FAST_FMA ABIs.

Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
This commit is contained in:
Adhemerval Zanella 2025-10-10 14:49:19 -03:00
parent 1c459af1ee
commit c9d9336f50
1 changed files with 2 additions and 2 deletions
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4
sysdeps/ieee754/flt-32/e_acoshf.c
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@ -93,10 +93,10 @@ __ieee754_acoshf (float x)
const double ln2h = 0x1.62e4p-1;
double Lh = ln2h * e;
double Ll = ln2l * e;
r = fma (z, c0, Ll + LIX[j]) + Lh;
r = (z * c0 + (Ll + LIX[j])) + Lh;
if (__glibc_unlikely ((asuint64 (r) & UINT64_C(0xfffffff)) == 0))
{
double h = fma (z, c0, Ll + LIX[j]) + (Lh - r);
double h = (z * c0 + (Ll + LIX[j])) + (Lh - r);
r = r + 64.0 * h;
}
}