diff options
| author | Keith Packard <keithp@keithp.com> | 2020-07-31 02:41:05 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2020-08-03 14:29:27 +0300 |
| commit | 12ad9a46dff86b7750aa9c8f8fca7349a0925114 (patch) | |
| tree | a674b94bec0fcc5d14a561941e1329fef6728a04 /newlib/libm/common | |
| parent | 5717262b8ecfed0f7fab63e2c09c78991e36f9dd (diff) | |
libm/math: Use __math_xflow in obsolete math code [v2]
C compilers may fold const values at compile time, so expressions
which try to elicit underflow/overflow by performing simple
arithemetic on suitable values will not generate the required
exceptions.
Work around this by replacing code which does these arithmetic
operations with calls to the existing __math_xflow functions that are
designed to do this correctly.
Signed-off-by: Keith Packard <keithp@keithp.com>
----
v2:
libm/math: Pass sign to __math_xflow instead of muliplying result
Diffstat (limited to 'newlib/libm/common')
| -rw-r--r-- | newlib/libm/common/math_errf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/newlib/libm/common/math_errf.c b/newlib/libm/common/math_errf.c index 53c68b1cf..bb8273b8d 100644 --- a/newlib/libm/common/math_errf.c +++ b/newlib/libm/common/math_errf.c @@ -51,13 +51,13 @@ xflowf (uint32_t sign, float y) return with_errnof (y, ERANGE); } -#if !__OBSOLETE_MATH HIDDEN float __math_uflowf (uint32_t sign) { return xflowf (sign, 0x1p-95f); } +#if !__OBSOLETE_MATH #if WANT_ERRNO_UFLOW /* Underflows to zero in some non-nearest rounding mode, setting errno is valid even if the result is non-zero, but in the subnormal range. */ |