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authorrofl0r <retnyg@gmx.net>2013-01-04 13:05:42 +0100
committerrofl0r <retnyg@gmx.net>2013-01-04 20:36:34 +0100
commit2ba3f44db51a816d3f89ca64d8943a3bee03fa5f (patch)
tree739e0039558f9e3966eee8bf88f21688815958cf
parent87781ac64ce5fcd68fb2cf32a3b4305a807e6367 (diff)
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add legacy header values.h
some programs (procps, babl) expect it, and it doesn't seem to cause any harm to just add it. it's small and straightforward. since math.h also defines MAXFLOAT, we undef it in both places, before defining it.
-rw-r--r--include/math.h1
-rw-r--r--include/values.h39
2 files changed, 40 insertions, 0 deletions
diff --git a/include/math.h b/include/math.h
index 19108795..c4da4116 100644
--- a/include/math.h
+++ b/include/math.h
@@ -346,6 +346,7 @@ long double truncl(long double);
#if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE)
+#undef MAXFLOAT
#define MAXFLOAT 3.40282347e+38F
#endif
diff --git a/include/values.h b/include/values.h
new file mode 100644
index 00000000..fe4949f8
--- /dev/null
+++ b/include/values.h
@@ -0,0 +1,39 @@
+#ifndef _VALUES_H
+#define _VALUES_H
+
+#include <limits.h>
+
+#define CHARBITS (sizeof(char) * 8)
+#define SHORTBITS (sizeof(short) * 8)
+#define INTBITS (sizeof(int) * 8)
+#define LONGBITS (sizeof(long) * 8)
+#define PTRBITS (sizeof(char *) * 8)
+#define DOUBLEBITS (sizeof(double) * 8)
+#define FLOATBITS (sizeof(float) * 8)
+
+#define MINSHORT SHRT_MIN
+#define MININT INT_MIN
+#define MINLONG LONG_MIN
+
+#define MAXSHORT SHRT_MAX
+#define MAXINT INT_MAX
+#define MAXLONG LONG_MAX
+
+#define HIBITS MINSHORT
+#define HIBITL MINLONG
+
+#include <float.h>
+
+#define MAXDOUBLE DBL_MAX
+#undef MAXFLOAT
+#define MAXFLOAT FLT_MAX
+#define MINDOUBLE DBL_MIN
+#define MINFLOAT FLT_MIN
+#define DMINEXP DBL_MIN_EXP
+#define FMINEXP FLT_MIN_EXP
+#define DMAXEXP DBL_MAX_EXP
+#define FMAXEXP FLT_MAX_EXP
+
+#define BITSPERBYTE CHAR_BIT
+
+#endif