git: db5344a7445f - main - lib/libnetbsd: bring in `__type_m{ax,in}*` macro family

The branch main has been updated by ngie:

URL: https://cgit.FreeBSD.org/src/commit/?id=db5344a7445f1a796bc3cacd32a46e88e3e589a7

commit db5344a7445f1a796bc3cacd32a46e88e3e589a7
Author:     Enji Cooper <ngie@FreeBSD.org>
AuthorDate: 2026-02-26 02:29:49 +0000
Commit:     Enji Cooper <ngie@FreeBSD.org>
CommitDate: 2026-02-26 07:41:08 +0000

    lib/libnetbsd: bring in `__type_m{ax,in}*` macro family
    
    These macros are used by some of the NetBSD tests which calculate the
    size of types, e.g., `__type_max(time_t)`.
    
    This wraps up the set of macros needed in order to update to the a
    netbsd-tests snapshot from this past month.
    
    Obtained from:  https://github.com/netbsd/src (55b4b44)
    MFC after:      1 week
---
 lib/libnetbsd/sys/cdefs.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/lib/libnetbsd/sys/cdefs.h b/lib/libnetbsd/sys/cdefs.h
index 78c80735ad01..e4ff4a516519 100644
--- a/lib/libnetbsd/sys/cdefs.h
+++ b/lib/libnetbsd/sys/cdefs.h
@@ -110,4 +110,34 @@
  */
 #define __nothing	(/*LINTED*/(void)0)
 
+#define __negative_p(x) (!((x) > 0) && ((x) != 0))
+
+#define __type_min_s(t) ((t)((1ULL << (sizeof(t) * __CHAR_BIT__ - 1))))
+#define __type_max_s(t) ((t)~((1ULL << (sizeof(t) * __CHAR_BIT__ - 1))))
+#define __type_min_u(t) ((t)0ULL)
+#define __type_max_u(t) ((t)~0ULL)
+#define __type_is_signed(t) (/*LINTED*/__type_min_s(t) + (t)1 < (t)1)
+#define __type_min(t) (__type_is_signed(t) ? __type_min_s(t) : __type_min_u(t))
+#define __type_max(t) (__type_is_signed(t) ? __type_max_s(t) : __type_max_u(t))
+
+
+#define __type_fit_u(t, a)						      \
+	(/*LINTED*/!__negative_p(a) &&					      \
+	    ((__UINTMAX_TYPE__)((a) + __zeroull()) <=			      \
+		(__UINTMAX_TYPE__)__type_max_u(t)))
+
+#define __type_fit_s(t, a)						      \
+	(/*LINTED*/__negative_p(a)					      \
+	    ? ((__INTMAX_TYPE__)((a) + __zeroll()) >=			      \
+		(__INTMAX_TYPE__)__type_min_s(t))			      \
+	    : ((__INTMAX_TYPE__)((a) + __zeroll()) >= (__INTMAX_TYPE__)0 &&   \
+		((__INTMAX_TYPE__)((a) + __zeroll()) <=			      \
+		    (__INTMAX_TYPE__)__type_max_s(t))))
+
+/*
+ * return true if value 'a' fits in type 't'
+ */
+#define __type_fit(t, a) (__type_is_signed(t) ? \
+    __type_fit_s(t, a) : __type_fit_u(t, a))
+
 #endif /* _LIBNETBSD_SYS_CDEFS_H_ */