1 files changed, 145 insertions, 0 deletions
diff --git a/Macros.h b/Macros.h
new file mode 100644
index 0000000..051bedb
--- /dev/null
+++ b/Macros.h
@@ -0,0 +1,145 @@
+#ifndef HEADER_Macros
+#define HEADER_Macros
+/*
+htop - Macros.h
+(C) 2020-2023 htop dev team
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <assert.h> // IWYU pragma: keep
+#include <math.h>
+#include <stdbool.h>
+#include <string.h> // IWYU pragma: keep
+
+
+#ifndef MINIMUM
+#define MINIMUM(a, b)                  ((a) < (b) ? (a) : (b))
+#endif
+
+#ifndef MAXIMUM
+#define MAXIMUM(a, b)                  ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef CLAMP
+#define CLAMP(x, low, high)            (assert((low) <= (high)), ((x) > (high)) ? (high) : MAXIMUM(x, low))
+#endif
+
+#ifndef ARRAYSIZE
+#define ARRAYSIZE(x)                   (sizeof(x) / sizeof((x)[0]))
+#endif
+
+#ifndef SPACESHIP_NUMBER
+#define SPACESHIP_NUMBER(a, b)         (((a) > (b)) - ((a) < (b)))
+#endif
+
+#ifndef SPACESHIP_NULLSTR
+#define SPACESHIP_NULLSTR(a, b)        strcmp((a) ? (a) : "", (b) ? (b) : "")
+#endif
+
+#ifndef SPACESHIP_DEFAULTSTR
+#define SPACESHIP_DEFAULTSTR(a, b, s)  strcmp((a) ? (a) : (s), (b) ? (b) : (s))
+#endif
+
+#ifdef  __GNUC__  // defined by GCC and Clang
+
+#define ATTR_FORMAT(type, index, check) __attribute__((format (type, index, check)))
+#define ATTR_NORETURN                   __attribute__((noreturn))
+#define ATTR_UNUSED                     __attribute__((unused))
+#define ATTR_MALLOC                     __attribute__((malloc))
+
+#else /* __GNUC__ */
+
+#define ATTR_FORMAT(type, index, check)
+#define ATTR_NORETURN
+#define ATTR_UNUSED
+#define ATTR_MALLOC
+
+#endif /* __GNUC__ */
+
+#ifdef HAVE_ATTR_NONNULL
+
+#define ATTR_NONNULL                    __attribute__((nonnull))
+#define ATTR_NONNULL_N(...)             __attribute__((nonnull(__VA_ARGS__)))
+
+#else
+
+#define ATTR_NONNULL
+#define ATTR_NONNULL_N(...)
+
+#endif /* HAVE_ATTR_NONNULL */
+
+#ifdef HAVE_ATTR_ALLOC_SIZE
+
+#define ATTR_ALLOC_SIZE1(a)             __attribute__((alloc_size (a)))
+#define ATTR_ALLOC_SIZE2(a, b)          __attribute__((alloc_size (a, b)))
+
+#else
+
+#define ATTR_ALLOC_SIZE1(a)
+#define ATTR_ALLOC_SIZE2(a, b)
+
+#endif /* HAVE_ATTR_ALLOC_SIZE */
+
+#ifdef HAVE_ATTR_ACCESS
+
+#define ATTR_ACCESS2(mode, ref)         __attribute__((access (mode, ref)))
+#define ATTR_ACCESS3(mode, ref, size)   __attribute__((access (mode, ref, size)))
+
+#else
+
+#define ATTR_ACCESS2(mode, ref)
+#define ATTR_ACCESS3(mode, ref, size)
+
+#endif /* HAVE_ATTR_ACCESS */
+
+#define ATTR_ACCESS2_R(ref)              ATTR_ACCESS2(read_only, ref)
+#define ATTR_ACCESS3_R(ref, size)        ATTR_ACCESS3(read_only, ref, size)
+
+#define ATTR_ACCESS2_RW(ref)             ATTR_ACCESS2(read_write, ref)
+#define ATTR_ACCESS3_RW(ref, size)       ATTR_ACCESS3(read_write, ref, size)
+
+#define ATTR_ACCESS2_W(ref)              ATTR_ACCESS2(write_only, ref)
+#define ATTR_ACCESS3_W(ref, size)        ATTR_ACCESS3(write_only, ref, size)
+
+// ignore casts discarding const specifier, e.g.
+//     const char []     ->  char * / void *
+//     const char *[2]'  ->  char *const *
+#if defined(__clang__)
+#define IGNORE_WCASTQUAL_BEGIN  _Pragma("clang diagnostic push") \
+                                _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#define IGNORE_WCASTQUAL_END    _Pragma("clang diagnostic pop")
+#elif defined(__GNUC__)
+#define IGNORE_WCASTQUAL_BEGIN  _Pragma("GCC diagnostic push") \
+                                _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#define IGNORE_WCASTQUAL_END    _Pragma("GCC diagnostic pop")
+#else
+#define IGNORE_WCASTQUAL_BEGIN
+#define IGNORE_WCASTQUAL_END
+#endif
+
+/* Cheaper function for checking NaNs. Unlike the standard isnan(), this may
+   throw an FP exception on a "signaling NaN".
+   (ISO/IEC TS 18661-1 and the C23 standard stated that isnan() throws no
+   exceptions even with a "signaling NaN") */
+static inline bool isNaN(double x) {
+   return !isgreaterequal(x, x);
+}
+
+/* Checks if x >= 0.0 but returns false if x is NaN. Because IEEE 754 considers
+   -0.0 == 0.0, this function treats both zeros as nonnegative. */
+static inline bool isNonnegative(double x) {
+   return isgreaterequal(x, 0.0);
+}
+
+/* Checks if x > 0.0 but returns false if x is NaN. */
+static inline bool isPositive(double x) {
+   return isgreater(x, 0.0);
+}
+
+/* This subtraction is used by Linux / NetBSD / OpenBSD for calculation of CPU usage items. */
+static inline unsigned long long saturatingSub(unsigned long long a, unsigned long long b) {
+   return a > b ? a - b : 0;
+}
+
+#endif