Changeset 516e780 in mainline for uspace/lib/posix/include

Timestamp:

2018-08-31T11:55:41Z (7 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/posix/include/posix/math.h (modified) (2 diffs)

uspace/lib/posix/include/posix/math.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2011 Petr Koupy
+ * Copyright (c) 2018 Jiri Svoboda
  * All rights reserved.
  *
@@ -30 +30 @@
  * @{
  */
-/** @file Mathematical operations.
- *
- * The purpose of this file is only to provide prototypes of mathematical
- * functions defined by C standard and by POSIX.
- *
- * It is up to the application to correctly link with either libmath
- * (provided by HelenOS) or by some other math library (such as fdlibm).
- */
 
 #ifndef POSIX_MATH_H_
 #define POSIX_MATH_H_
 
-#ifdef __GNUC__
-#define HUGE_VAL (__builtin_huge_val())
+/*
+ * Just a pass-through to libc math.h
+ */
+#include "libc/math.h"
+
 #endif
-
-extern double ldexp(double, int);
-extern double frexp(double, int *);
-
-extern double fabs(double);
-extern double floor(double);
-extern double ceil(double);
-extern double modf(double, double *);
-extern double fmod(double, double);
-extern double pow(double, double);
-extern double exp(double);
-extern double frexp(double, int *);
-extern double expm1(double);
-extern double sqrt(double);
-extern double log(double);
-extern double log10(double);
-extern double sin(double);
-extern double sinh(double);
-extern double asin(double);
-extern double asinh(double);
-extern double cos(double);
-extern double cosh(double);
-extern double acos(double);
-extern double acosh(double);
-extern double tan(double);
-extern double tanh(double);
-extern double atan(double);
-extern double atanh(double);
-extern double atan2(double, double);
-extern double copysign(double, double);
-
-#endif /* POSIX_MATH_H_ */
 
 /** @}