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About trapping integer division-by-zero errors wit
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Software floating-point division-by-zero errors in
About trapping software floating-point division-by
Identification of software floating-point division
Software floating-point division-by-zero debugging
New language features of C99
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// comments in C99 and C90
Compound literals in C99
Designated initializers in C99
Hexadecimal floating-point numbers in C99
Flexible array members in C99
__func__ predefined identifier in C99
inline functions in C99
long long data type in C99 and C90
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Mixed declarations and statements in C99
New block scopes for selection and iteration state
_Pragma preprocessing operator in C99
Restricted pointers in C99
Additional <math.h> library functions in C99
Complex numbers in C99
Boolean type and <stdbool.h> in C99
Extended integer types and functions in <inttyp
<fenv.h> floating-point environment access i
<stdio.h> snprintf family of functions in C9
<tgmath.h> type-generic math macros in C99
<wchar.h> wide character I/O functions in C9
How to prevent uninitialized data from being initi
Compiler Diagnostic Messages
Using the Inline and Embedded Assemblers of the AR
<tgmath.h> type-generic math macros in C99
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| Home > Compiler Coding Practices > <tgmath.h> type-generic math macros in C99 | |||
The new standard header <tgmath.h> defines
several families of mathematical functions that are type generic
in the sense that they are overloaded on floating-point types. For
example, the trigonometric function cos works
as if it has the overloaded declaration:
extern float cos(float x); extern double cos(double x); extern long double cos(long double x); ...
A statement such as:
p = cos(0.78539f); // p = cos(pi / 4)
calls the single-precision version of the cos function,
as determined by the type of the literal 0.78539f.
Note
Type-generic families of mathematical functions can be defined
in C++ using the operator overloading mechanism. The semantics of
type-generic families of functions defined using operator overloading
in C++ are different from the semantics of the corresponding families
of type-generic functions defined in <tgmath.h>.
See also- Concepts
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