Vector Arithmetic Subtraction

# trader_sub

(PECL trader >= 0.2.0)

trader_sub — Vector Arithmetic Subtraction

### 说明

function trader_sub(array `$real0`, array `$real1`): array

Calculates the vector subtraction of `real1` from `real0` and returns the resulting vector.

### 参数

`real0`

  浮点数数组。

`real1`

  浮点数数组。

### 返回值

Returns an array with calculated data or false on failure.

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