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NAME
float_t, double_t - most efficient floating types
LIBRARY
Math library (libm)
SYNOPSIS
bash
#include <math.h>bash
typedef\n /* ... */ \nfloat_t;\n
\ntypedef\n /* ... */ \ndouble_t;DESCRIPTION
The implementation's most efficient floating types at least as wide as float and double respectively. Their type depends on the value of the macro FLT_EVAL_METHOD (defined in <float.h>):
| FLT_EVAL_METHOD | float_t | double_t |
| 0 | float | double |
| 1 | double | double |
| 2 | long double | long double |
For other values of FLT_EVAL_METHOD, the types of float_t and double_t are implementation-defined.
STANDARDS
C11, POSIX.1-2008.
HISTORY
C99, POSIX.1-2001.
SEE ALSO
float.h(0p), math.h(0p)