Eric Fiselier 43a10eb637 Don't use std::__clz in 'test/support/hexfloat.h'. ...

std::__clz is a libc++ specific function so it can't be used in the test suite.
This patch implements a dumb "count leading zeros" implementation within
hexfloat itself.

This patch also fixes UB since the output of `__builtin_clz(0)` is undefined
according to the GCC docs.

llvm-svn: 268354

2016-05-03 02:04:26 +00:00

1.4 KiB

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