Changeset e6edc8d1 in mainline for uspace/lib/posix/include/posix/float.h

Timestamp:

2013-07-11T19:13:37Z (12 years ago)

Author:

Manuele Conti <conti.ma@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

67632f7

Parents:

52ff62d3 (diff), 2b3e8840 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge with mainline changes.

File:

• uspace/lib/posix/include/posix/float.h (modified) (1 diff)

uspace/lib/posix/include/posix/float.h

@@ -61 +61 @@
         #undef FLT_RADIX
         #define FLT_RADIX __FLT_RADIX__
+#else
+/* For something else than GCC, following definitions are provided.
+ * They are intentionally guarded by the given macro to ensure that anyone
+ * who wants them states this explicitly.
+ *
+ * The values are the ones GCC prints when compiled on i686 Linux.
+ *
+ * WARNING: the values are not accurate (especially the long double ones)!
+ *
+ */
+#ifdef FLOAT_H_YES_I_REALLY_WANT_LIMITS
+/* float limits */
+#define FLT_MIN 1.1754943508222875079687365372222456778186655567720875215087517062784172594547271728515625e-38
+#define FLT_MAX 340282346638528859811704183484516925440
+
+/* double limits */
+#define DBL_MIN 2.2250738585072013830902327173324040642192159804623318305533274168872044348139181958542831590125110205640673397310358110051524341615534601088560123853777188211307779935320023304796101474425836360719216e-308
+#define DBL_MAX 1.7976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895351438246423432132688946418276846754670353751698604991057655128207624549009038932894407587e+308
+
+/* long double limits */
+#define LDBL_MIN 3.3621031431120935062626778173217526025980793448464712401088272298087426993907289670430927063650562228625019066688234732270901114717276781407474941951906317291667263914849985862188944930687409323125832e-4932L
+#define LDBL_MAX 1.1897314953572317650212638530309702051690633222946242004403237338917370055229707226164102903365288828535456978074955773144274431536702884341981255738537436786735932007069732632019159182829615243655295e+4932L
+
+/* epsilons */
+#define FLT_EPSILON 1.1920928955078125e-07
+#define DBL_EPSILON 2.220446049250313080847263336181640625e-16
+#define LDBL_EPSILON 1.08420217248550443400745280086994171142578125e-19L
+
+/* float radix */
+#define FLT_RADIX 2
+
+/* mantisa */
+#define FLT_MANT_DIG 24
+#define DBL_MANT_DIG 53
+#define LDBL_MANT_DIG 64
+
+/* exponents */
+#define DBL_MIN_EXP -1021
+#define DBL_MAX_EXP 1024
+
 #endif
+
+#endif /* __GNUC__ */
 
 #endif /* POSIX_FLOAT_H_ */