expm1

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

expm1 — 锟斤拷锟斤拷 exp(number) - 1锟斤拷锟斤拷锟斤拷锟斤拷 number 锟斤拷值锟接斤拷锟斤拷也锟杰硷拷锟斤拷锟阶既凤拷锟斤拷

说锟斤拷

expm1 ( float $arg ) : float

expm1() 锟斤拷锟斤拷 'exp(number) - 1'锟斤拷锟斤拷锟斤拷锟斤拷 number 锟斤拷值锟接斤拷锟斤拷也锟杰硷拷锟斤拷锟阶既凤拷锟斤拷锟斤拷锟斤拷锟角碉拷锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷鹊锟绞憋拷锟� 'exp (number) - 1' 锟酵伙拷锟矫诧拷太准确锟斤拷

锟斤拷锟斤拷

arg

要锟斤拷锟斤拷牟锟斤拷锟�

锟斤拷锟斤拷值

'e' to the power of arg minus one

锟斤拷锟斤拷锟斤拷志

锟芥本 说锟斤拷
5.3.0 锟剿猴拷锟斤拷锟斤拷锟斤拷锟斤拷平台锟较撅拷锟斤拷锟斤拷

锟轿硷拷

  • log1p() - 锟斤拷锟斤拷 log(1 + number)锟斤拷锟斤拷锟斤拷锟斤拷 number 锟斤拷值锟接斤拷锟斤拷也锟杰硷拷锟斤拷锟阶既凤拷锟斤拷
  • exp() - 锟斤拷锟斤拷 e 锟斤拷指锟斤拷