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C Data Type Q&A » float » constant

1. How to disable gcc warning "floating constant exceeds range" and "floating constant truncated to zero"? stackoverflow.com

These obnoxious warnings are on-by-default in current gcc, and I can't find which option is needed to disable them. They're generating warning-spam and preventing compiling with -Werror in code where the ...

2. Hexadecimal floating-point constants in C stackoverflow.com

I've got a hexadecimal floating-point constant which I'd like to declare directly in my C program, and avoid conversion. I believe it must be normalized first, right? How do ...

3. Floating Point Constants - Inlining Questions bytes.com

I want to define a set of floating point constants using templates insteand of macros. I'd like to determine whether these constants are floats or doubles at compile time. In my header file, I have this: template struct Constants { typedef double SampleType; static const double pi; static const double piDoubled; static const double SampleRateDefault; static const double DenormalOffset; }; ...

4. Floating-Point Constant with Payload bytes.com

Hi, I'm looking for a general purpose way of initializing a floating-point constant with an arbitrary bit pattern using C99. For example, const unsigned int x=0x3f800000U; //assume 32-bits const float y=*(float*)&x; //assume 32-bit single-precision IEEE754 Compiling this code on GCC generates the error "initializer element is not constant". I can enter plus/minus zero, finites, infinites (using 1.0/0.0 and -1.0/0.0), but NaNs ...

5. constant expression with float type bytes.com

On 2006-05-27 04:45, aegis wrote:[color=blue] > -0.0f * -0.0f > > Which section in the standard describes the above?[/color] I would think 6.5.5 4: "The result of the binary * operator is the product of the operands." Erik Wikstrm -- "I have always wished for my computer to be as easy to use as my telephone; my wish has come true ...

6. That Constant Double to Float newbie thing cboard.cprogramming.com

/* Computes net tire sales */ #include main() { int numTires; float tirePrice, beforeTax, netSale; float taxRate = .07; /* Sales Tax */ /* Ask user for values */ printf("how many tires bought? "); scanf(" %d", &numTires); printf("How much is each tire? "); scanf(" %f", &tirePrice); /* Computer the Sale */ beforeTax = tirePrice * numTires; netSale = beforeTax + ...