A long double %La went to the host, which on Windows (MinGW) prints the
64-bit significand with its integer bit as the leading digit:
0xc.ccccccccccccccdp-7 for 0.1L. The libc.prx that titles ship
normalises it like a double, with a leading 1 and the remaining 63 bits
as 16 hexadecimal digits, 0x1.999999999999999ap-4, and rounds a shorter
precision half up with the carry kept in the leading digit. Share
HexFloat's digit and rounding code between double and long double and
use it for finite long double %a and %A in the narrow and wide families.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Console libSceLibcInternal exports Y9C9GeKyZ3A as a 136-byte STT_OBJECT;
titles that resolve the wide num_get vtable as data need a zeroed 17-slot
object matching the narrow num_get layout on console.
tanh returned the host's tanh, whose last bit differs from the titles' copy
on Windows. The titles' copy is FreeBSD msun's s_tanh.c over msun's expm1,
and it sets no errno. tanh now computes that algorithm over this file's
Expm1.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
asinf left errno unchanged for |x| > 1, the infinities and NaN, following
included, stores EDOM there and leaves it alone for |x| <= 1; asinf now
does the same, and the test expects it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
asinf returned the host asin, so its last bit depended on the host: on
Windows it differs from the libc.prx that titles ship on 5,413,834 of the
floats in (-1, 1). That libc.prx is msun's e_asinf.c, which gives the same
bits as PPSA07923's and PPSA05916's copies for all 2^32 arguments. errno
is still left unchanged for |x| > 1 and NaN.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
cbrt returned the host's cbrt, whose last bit differs from the titles' copy
on Windows on 99,933,841 of 320 million random arguments, about 31%. The
titles' copy is FreeBSD msun's s_cbrt.c, and cbrt now computes it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
logb and logbf returned the host's logb, which sets ERANGE for a zero
argument on Windows and returns signalling NaNs unquieted. The titles'
copies are FreeBSD msun's s_logb.c and s_logbf.c, which set no errno and
quiet a NaN through x * x; both functions now compute that algorithm.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The wide printf family still formatted floating-point conversions
through the host, while the libc.prx that titles ship gives swprintf the
same text as snprintf: on 199,948 random formats the copy bundled with
PPSA07923 printed identical narrow and wide output, and this build's
wide output differed from it on 23,893. Use the narrow DecimalFloat and
HexFloat for finite values.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The libc.prx bundled with PPSA02530 keeps error_code values in the second
dword: the shared error_category::default_error_condition shifts the value
into the high half and the equivalent overloads compare that dword and the
category. Export the type info, the base destructor and the three base
members, so titles that import them resolve to the same code the generic
and system category vtables already use.
future_category returns a static _Future_error_category derived from
_Generic_error_category and named "future". Its message maps 1..4 to
"broken promise", "future already retrieved", "promise already satisfied"
and "no state", and falls back to the generic table. future_error is 0x40
bytes: a GuestLocale::String at 0x8 and the 16-byte error_code at 0x30; its
0x30-byte vtable carries the console's _Doraise slot. _Throw_future_error
allocates that size and throws it with the console type info, and
_Rethrow_future_exception delegates to rethrow_exception.
swscanf restores errno around strtof and strtod, as the bundled
libc.prx does, while long double conversions keep host strtold's
errno and the narrow sscanf family keeps the host's ERANGE. Record
both gaps in the existing swscanf debt entry, as review asked.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
atan2f returned the host atan2, so its last bit depended on the host: on
Windows it differs from the libc.prx that titles ship on 7,126,466 of
200,001,024 sampled argument pairs. That libc.prx is msun's e_atan2f.c over
its atanf; with two NaN arguments it returns y's. The port gives the same
bits as PPSA07923's, PPSA05916's and PPSA13934's copies on every pair.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The libc.prx that PPSA31872 ships returns ERANGE for a buffer shorter than
23 bytes and otherwise strncpy's length - 1 bytes and terminates the last
one. This matches the firmware 13.60 log, where error 0 with a 16-byte
buffer returned 34 although "No error" fits.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Adrià