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-rw-r--r--include/slibc-human.h17
-rw-r--r--include/slibc/features.h92
2 files changed, 101 insertions, 8 deletions
diff --git a/include/slibc-human.h b/include/slibc-human.h
index 6f5a603..9aebcfd 100644
--- a/include/slibc-human.h
+++ b/include/slibc-human.h
@@ -160,12 +160,12 @@ enum machinesize_mode
-char* humanmode(const char* restrict buffer, mode_t mode);
+char* humanmode(char* restrict buffer, mode_t mode);
mode_t machinemode(const char* restrict str, mode_t mode, mode_t mask);
-char* humansize(const char* restrict buffer, size_t size, enum humansize_mode mode, int detail);
+char* humansize(char* restrict buffer, size_t size, enum humansize_mode mode, int detail);
int machinesize(size_t* restrict size, const char* restrict string, enum machinesize_mode mode);
@@ -177,13 +177,22 @@ int machinedur(intmax_t* restrict sec, long int* nsec, const char* restrict str,
const char* restrict space, const char* restrict comma);
-int machineint(intmax_t* restrict r, const char* restrict str);
+char* machineint(intmax_t* restrict r, const char* restrict str);
+# ifdef __CONST_CORRECT
+# define machineint(...) (__const_correct_2p(machineint, __VA_ARGS__))
+# endif
-int machineuint(uintmax_t* restrict r, const char* restrict str);
+char* machineuint(uintmax_t* restrict r, const char* restrict str);
+# ifdef __CONST_CORRECT
+# define machineuint(...) (__const_correct_2p(machineuint, __VA_ARGS__))
+# endif
#endif
int machinefloat(long double* restrict r, const char* restrict str,
const char* restrict space, const char* restrict comma);
+#ifdef __CONST_CORRECT
+# define machinefloat(...) (__const_correct_2(machinefloat, __VA_ARGS__))
+#endif
/**
diff --git a/include/slibc/features.h b/include/slibc/features.h
index 6951ea4..bb28189 100644
--- a/include/slibc/features.h
+++ b/include/slibc/features.h
@@ -29,6 +29,17 @@
/**
+ * Update existance of `__const_correct*` macros
+ */
+#ifdef __CONST_CORRECT
+# undef __CONST_CORRECT
+# undef __const_correct
+# undef __const_correct2
+# undef __const_correct2p
+#endif
+
+
+/**
* Macro for any function with at least 2 arguments,
* that shall return with `const` qualifier if and only
* if the first argument is `const`-qualifier.
@@ -48,10 +59,6 @@
* @param ... The rest of the arguments.
* @return The result casted to the same type as `first`.
*/
-#ifdef __CONST_CORRECT
-# undef __CONST_CORRECT
-# undef __const_correct
-#endif
#if defined(__GNUC__) && defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
# define __CONST_CORRECT
# define __const_correct(function, first, ...) \
@@ -81,6 +88,83 @@
* than using a fall back. */
+/**
+ * Macro for any function with at least 3 arguments,
+ * that shall return with `const` qualifier if and only
+ * if the second argument is `const`-qualifier.
+ *
+ * Other qualifiers could be dropped.
+ *
+ * @param function The name of the function.
+ * @param first The first argument.
+ * @param second The second argument.
+ * @param ... The rest of the arguments.
+ * @return The result casted to the same type as `second`.
+ */
+#if defined(__GNUC__) && defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
+# define __CONST_CORRECT
+# define __const_correct2(function, first, second, ...) \
+ (_Generic(&(second), \
+ const wchar_t(*)[]: (const wchar_t*)function(first, second, __VA_ARGS__), \
+ const char(*)[]: (const char*) function(first, second, __VA_ARGS__), \
+ const void**: (const void*) function(first, second, __VA_ARGS__), \
+ void**: function(first, second, __VA_ARGS__), \
+ default: (__typeof__(&*first))function(first, second, __VA_ARGS__)))
+#elif defined(__GNUC__)
+# define __CONST_CORRECT
+# define __const_correct2(function, first, second, ...) \
+ ((__typeof__(&*second))function(first, second, __VA_ARGS__))
+#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
+# define __CONST_CORRECT
+# define __const_correct2(function, first, second, ...) \
+ (_Generic(&(second), \
+ const wchar_t(*)[]: (const wchar_t*)function(first, second, __VA_ARGS__), \
+ const char(*)[]: (const char*) function(first, second, __VA_ARGS__), \
+ const wchar_t**: (const wchar_t*)function(first, second, __VA_ARGS__), \
+ const char**: (const char*) function(first, second, __VA_ARGS__), \
+ const void**: (const void*) function(first, second, __VA_ARGS__), \
+ default: function(first, second, __VA_ARGS__)))
+#endif
+
+
+/**
+ * Macro for any function with precisely 2 arguments,
+ * that shall return with `const` qualifier if and only
+ * if the second argument is `const`-qualifier.
+ *
+ * Other qualifiers could be dropped.
+ *
+ * @param function The name of the function.
+ * @param first The first argument.
+ * @param second The second argument.
+ * @return The result casted to the same type as `second`.
+ */
+#if defined(__GNUC__) && defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
+# define __CONST_CORRECT
+# define __const_correct2p(function, first, second) \
+ (_Generic(&(second), \
+ const wchar_t(*)[]: (const wchar_t*)function(first, second), \
+ const char(*)[]: (const char*) function(first, second), \
+ const void**: (const void*) function(first, second), \
+ void**: function(first, second), \
+ default: (__typeof__(&*first))function(first, second)))
+#elif defined(__GNUC__)
+# define __CONST_CORRECT
+# define __const_correct2p(function, first, second) \
+ ((__typeof__(&*second))function(first, second))
+#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
+# define __CONST_CORRECT
+# define __const_correct2p(function, first, second) \
+ (_Generic(&(second), \
+ const wchar_t(*)[]: (const wchar_t*)function(first, second), \
+ const char(*)[]: (const char*) function(first, second), \
+ const wchar_t**: (const wchar_t*)function(first, second), \
+ const char**: (const char*) function(first, second), \
+ const void**: (const void*) function(first, second), \
+ default: function(first, second)))
+#endif
+
+
/**
* _BSD_SOURCE || _SVID_SOURCE || _GNU_SOURCE implies _POSIX_C_SOURCE = 2.