llvm-project.git/libc/test/src/stdlib/strtof_test.cpp, branch users/nico/python-2

[libc] Reduce direct use of errno in src/stdlib and src/__support tests. (#143767)

2025-06-11T19:23:17+00:00

* Get rid of libc_errno assignments in str_to_* __support tests, since
those API have been migrated to return error in a struct instead.
* Migrate tests for atof and to strto* functions from  and for
strdup from  to use ErrnoCheckingTest harness.

[NFC][libc] Clarifies underscores in n-char-sequence. (#102193)

2024-08-12T16:59:24+00:00

The C standard specifies
  n-char-sequence:
    digit
    nondigit
    n-char-sequence digit
    n-char-sequence nondigit

nondigit is specified as one of:
  _ a b c d e f g h i j k l m
    n o p q r s t u v w x y z
    A B C D E F G H I J K L M
    N O P Q R S T U V W X Y Z

This means nondigit includes the underscore character. This patch
clarifies this status in the comments and the test.

Note C17 specifies n-char-sequence for NaN() as optional, and an empty
sequence is not a valid n-char-sequence. However the current comment has
the same effect as using the pedantic wording. So I left that part
unchanged.

[libc] Move libc_errno inside of LIBC_NAMESPACE (#80774)

2024-02-06T09:36:05+00:00

Having libc_errno outside of the namespace causes versioning issues when
trying to link the tests against LLVM-libc. Most of this patch is just
moving libc_errno inside the namespace in tests. This isn't necessary in
the function implementations since those are already inside the
namespace.

[libc][NFC] Use specific ASSERT macros to test errno (#79573)

2024-01-26T14:18:22+00:00

This patch provides specific test macros to deal with `errno`.
This will help abstract away the differences between unit test and integration/hermetic tests in #79319.
In one case we use `libc_errno` which is a struct, in the other case we deal directly with `errno`.

[libc] Add C23 limits.h header. (#78887)

2024-01-24T21:08:56+00:00

[libc][NFC] Remove `FPBits` cast operator (#79142)

2024-01-23T16:30:19+00:00

The semantics for casting can range from "bitcast" (same representation)
to "different representation", to "type promotion". Here we remove the
cast operator and force usage of `get_val` as the only function to get
the floating point value, making the intent clearer and more consistent.

[libc] Mass replace enclosing namespace (#67032)

2023-09-26T09:45:04+00:00

This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

[libc] Support underscores in NaN char sequences

2023-08-02T20:02:47+00:00

Other libc implementations support underscores in NaN(n-char-sequence)
strings. Us not supporting that is causing fuzz failures, so this patch
solves the problem.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D156927

[libc] Add strtoint32 and strtoint64 tests

2023-06-01T22:06:46+00:00

There were regressions in the testing framework due to none of the
functioning buildbots having a 32 bit long. This allowed the 32 bit
version of the strtointeger function to go untested. This patch adds
tests for strtoint32 and strtoint64, which are internal testing
functions that use constant integer sizes. It also fixes the tests to
properly handle these situations.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D151935

[libc][NFC] Move RoundingModeUtils to LibcFPTestHelpers.

2023-04-18T18:37:30+00:00

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D148602