reference:language:ldexp
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| — | reference:language:ldexp [2023/06/07 04:23] (当前版本) – 外部编辑 127.0.0.1 | ||
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| + | ====== ldexp() ====== | ||
| + | |||
| + | ===== 例子 ===== | ||
| + | <code cpp> | ||
| + | double c = ldexp(3, 2); // Sets c to 12 = 3 * 2 ^ 2 | ||
| + | double d = ldexp(2, 4); // Sets d to 32 = 2 * 2 ^ 4 | ||
| + | </ | ||
| + | ==== 描述 ==== | ||
| + | 计算x乘以2的exp次幂 （ x * ( 2^exp ) ） | ||
| + | |||
| + | ==== 语法 ==== | ||
| + | |||
| + | ldexp(x, exp) | ||
| + | === 参数 === | ||
| + | |||
| + | x double, float or int | ||
| + | |||
| + | exp double, float or int | ||
| + | |||
| + | 返回 double | ||
