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[libc] Add implementations of ldexp[f|l].

Authored by sivachandra on Nov 4 2020, 10:34 PM.

Description

[libc] Add implementations of ldexp[f|l].

The rounding behavior of NormalFloat to float format has been changed
to round to nearest. Also, a bug in NormalFloat to subnormal number
conversion has been fixed.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91591

Details

Committed
sivachandraNov 17 2020, 3:05 PM
Reviewer
lntue
Differential Revision
D91591: [libc] Add implementations of ldexp[f|l].
Parents
rG8e923ec2a803: Fix assertions and bad warnings on extremely wide bit-fields.
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