[metadata]
id = "PRE13-C"
type = "recommendation"
category = "PRE"
number = 13
title = "Use the Standard predefined macros to test for versions and features."
description = """
The C Standard defines a set of predefined macros (see subclause 6.10.8) to help
the user determine if theimplementationbeing used is aconformingimplementation,
and if so, to which version of the C Standard it conforms. These macros can also
help the user to determine which of the standard features are implemented. The
following tables list these macros and indicate in which version of the C
Standard they were introduced. The following macros are required: Macro NameC90C
99C11__STDC__✓✓✓__STDC_HOSTED__✓✓__STDC_VERSION__1✓✓__DATE__✓✓✓__FILE__✓✓✓__LINE
__✓✓✓__TIME__✓✓✓
"""
severity = "Low"
likelihood = "Probable"
priority = "P2"
level = "L3"
cert_version = "2016 Edition (Wiki)"
last_modified = "Aug 31, 2025"
[rules.cert_c.PRE13-C]
enabled = true
[references]
wiki = "https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87151942"