URL:
<https://savannah.nongnu.org/bugs/?57071>
Summary: Fix math.h and function names that block 64-bit
double
Project: AVR C Runtime Library
Submitted by: gjlayde
Submitted on: Thu 17 Oct 2019 07:10:37 AM UTC
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Percent Complete: 0%
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 2.0.0
Fixed Release: None
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Details:
Implementation of math.h / libm currently blocks 64-bit double, namely:
1) Function names are wrong, e.g. 32-bit implementation of sine is named
"sin", not "sinf".
2) There are "aliases" in math.h (macros actually) that define the float
version (like "sinf") to the double version (like "sin"). Problem is that
this:
2a) This is the wrong way round ("sin" should be alias of "sinf").
2b) There are no proper prototypes.
2c) Macros are bad, e.g. in C++ when some class implements a method for which
math.h defines a macro, C++ functions / methods are silently renamed.
3) math.h is unconditional, i.e. treats double != float just like double =
float.
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