double_t

float_t, double_t

Defined in header <math.h>
typedef /*implementation defined*/ float_t
(since C99)
typedef /*implementation defined*/ double_t
(since C99)

The types float_t and double_t are floating types at least as wide as float and double, respectively, and such that double_t is at least as wide as float_t. The value of 登录查看完整内容