https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126824
Bug ID: 126824
Summary: Incorrect rounding behavior documented for __trunc*
routines
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: evonatarius at gmail dot com
Target Milestone: ---
The GCC internals manual documents the following functions:
__truncxfdf2
__trunctfdf2
__truncxfsf2
__trunctfsf2
__truncdfsf2
as follows:
> These functions truncate `a` to the narrower mode of their return type,
> rounding toward zero.
This statement doesn't match the current libgcc implementation. The rounding
behavior of these functions depends on the target configuration and, on some
targets, the active rounding mode.
This report concerns documentation only.
