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Keith Packard via Newlib a44bc679a4 libm/machine/arm: Add optimized fmaf and fma when available
When HAVE_FAST_FMAF is set, use the vfma.f32 instruction, when
HAVE_FAST_FMA is set, use the vfma.f64 instruction.

Usually the compiler built-ins will already have inlined these
instructions, but provide these symbols for cases where that doesn't
work instead of falling back to the (inaccurate) common code versions.

Signed-off-by: Keith Packard <keithp@keithp.com>
2020-08-10 21:04:12 +02:00
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