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1. medium.com › @costaparas › the-gcc-warning-flagsGCC warning options for C programmers | by Costa ... - Medium

   medium.com › @costaparas › the-gcc-warning-flags

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   Mar 12, 2021 · Mar 12, 2021. Any C programmer who has used GCC would be familiar with at least some basic compilation flags designed to help them write correct and robust code. For decades, many have used warning...

2. stackoverflow.com › questions › 60024551java - Alternative for deprecated new Double(double) - Stack ...

   stackoverflow.com › questions › 60024551

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   Feb 2, 2020 · A sample program in it contains the following lines: Double[] d = new Double[10]; for (int i = 0; i < d.length; i++) d[i] = new Double(d.length - i); And I got the following warning message: warning: [deprecation] Double (double) in Double has been deprecated.

3. learn.microsoft.com › en-us › cppType conversions and type safety | Microsoft Learn

   learn.microsoft.com › en-us › cpp

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   Aug 2, 2021 · A program that never explicitly or implicitly converts values from one type to another is type-safe by definition. However, type conversions, even unsafe conversions, are sometimes required.

4. gcc.gnu.org › onlinedocs › gccWarning Options (Using the GNU Compiler Collection (GCC))

   gcc.gnu.org › onlinedocs › gcc

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   Give a warning when a value of type float is implicitly promoted to double. CPUs with a 32-bit “single-precision” floating-point unit implement float in hardware, but emulate double in software.

5. learn.microsoft.com › en-us › cppCompiler Warning (levels 3 and 4) C4244 | Microsoft Learn

   learn.microsoft.com › en-us › cpp

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   Nov 15, 2023 · Compiler Warning (levels 3 and 4) C4244. 'conversion' conversion from 'type1' to 'type2', possible loss of data. An integer type is converted to a smaller integer type. This is a level-4 warning if type1 is a signed or unsigned int and type2 is a smaller, such as a signed or unsigned short.

6. github.com › minetest › minetestEnable the double-promotion warning when compiling with gcc

   github.com › minetest › minetest

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   Jan 27, 2018 · -Wdouble-promotion (C, C++, Objective-C and Objective-C++ only) Give a warning when a value of type "float" is implicitly promoted to "double". CPUs with a 32-bit "single-precision" floating-point unit implement "float" in hardware, but emulate "double" in software.

7. People also ask

   How do I disable a conversion warning in C++?

   • Warnings about conversions between signed and unsigned integers can be disabled by using -Wno-sign-conversion . For C++, also warn for confusing overload resolution for user-defined conversions; and conversions that never use a type conversion operator: conversions to void, the same type, a base class or a reference to them.

   Warning Options (Using the GNU Compiler Collection (GCC))

   gcc.gnu.org/onlinedocs/gcc/Warning-Options.html

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   Can CXXFLAGS -wdouble-promotion -fsingle-precision-constant -?

   • * It is easy to accidentally do computations with "double" because floating-point literals are implicitly of type "double". Adding -Wdouble-promotion to your CXXFLAGS should provide you with compile-time warnings. There is also -fsingle-precision-constant which prohibits implicit conversion of floats to doubles.

   Prevent implicit conversions from float to double in C++

   stackoverflow.com/questions/24478897/prevent-implicit-conversions-from-float-to-double-in-c

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   How do I enable a warning in C++?

   • In C++, this warning is also enabled by -Wall. In C, it is also enabled by -Wextra . Warn for implicit conversions that may change the sign of an integer value, like assigning a signed integer expression to an unsigned integer variable. An explicit cast silences the warning. In C, this option is enabled also by -Wconversion .

   Warning Options (Using the GNU Compiler Collection (GCC))

   gcc.gnu.org/onlinedocs/gcc/Warning-Options.html

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   How can a float/double error be prevented?

   • This type of error could be prevented, by forcing the compiler to not do any implicit conversions of float to double. Is there any way to achieve this, be it through a compilation switch (preferably in Visual Studio), some smart macros, or a class which behaves like float/double variables and declares its own operators?

   Prevent implicit conversions from float to double in C++

   stackoverflow.com/questions/24478897/prevent-implicit-conversions-from-float-to-double-in-c

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8. www.bbc.com › news › articlesFestival drug testing: Warning over 'double dose' ecstasy pills

   www.bbc.com › news › articles

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   Warning over 'double dose' ecstasy pills at festivals. A drug testing charity has warned festival-goers that potentially deadly super-strength MDMA pills are being sold in the UK. The Loop, based ...