Changeset 516e780 in mainline for uspace/lib/c/include/float.h

Timestamp:

2018-08-31T11:55:41Z (6 years ago)

Author:

GitHub <noreply@…>

Branches:

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

Children:

fa86fff

Parents:

7f7d642

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2018-08-31 11:55:41)

git-committer:

GitHub <noreply@…> (2018-08-31 11:55:41)

Message:

Strip down libmath. (#45)

libmath is mostly unused (except for trunc(), sin() and cos()), and most functions in it are either very imprecise or downright broken. Additionally, it is implemented in manner that conflicts with C standard. Instead of trying to fix all the shortcomings while maintaining unused functionality, I'm opting to simply remove most of it and only keep the parts that are currently necessary.

Later readdition of the removed functions is possible, but there needs to be a reliable way to evaluate their quality first.

File:

• uspace/lib/c/include/float.h (moved) (moved from uspace/lib/math/include/atan.h ) (2 diffs)

uspace/lib/c/include/float.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2015 Jiri Svoboda
+ * Copyright (c) 2018 CZ.NIC, z.s.p.o.
  * All rights reserved.
  *
@@ -27 +27 @@
  */
 
-/** @addtogroup libmath
- * @{
- */
-/** @file
- */
+#ifndef _FLOAT_H
+#define _FLOAT_H
 
-#ifndef LIBMATH_ATAN_H_
-#define LIBMATH_ATAN_H_
+// FIXME: <float.h> is freestanding. Just include the compiler-provided file.
 
-#include <mathtypes.h>
+#define FLT_MIN __FLT_MIN__
+#define FLT_DENORM_MIN __FLT_DENORM_MIN__
+#define FLT_EPSILON __FLT_EPSILON__
 
-extern float32_t float32_atan(float32_t);
-extern float64_t float64_atan(float64_t);
+#define FLT_MANT_DIG  __FLT_MANT_DIG__
+#define DBL_MANT_DIG  __DBL_MANT_DIG__
+#define FLT_MAX_EXP __FLT_MAX_EXP__
+#define DBL_MAX_EXP __DBL_MAX_EXP__
 
 #endif
 
-/** @}
- */