NAME | LIBRARY | SYNOPSIS | DESCRIPTION | STANDARDS | HISTORY | SEE ALSO |
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double_t(3type) double_t(3type)
float_t, double_t - most efficient floating types
Math library (libm)
#include <math.h> typedef /* ... */ float_t; typedef /* ... */ double_t;
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.
C11, POSIX.1-2008.
C99, POSIX.1-2001.
float.h(0p), math.h(0p)
Linux man-pages 6.04 2023-03-30 double_t(3type)