expm1 -- exponential minus 1

Synopsis

• Usage:

  expm1 x

  expm1 I

• Inputs:
  • x
  • I, a real interval
• Outputs:
  • a real number, the quantity exp(x)-1
  • a real interval, an interval containing the exponential of the points of I minus one

Description

i1 : expm1 1p100e-10

o1 = 1.00000000005000000000166666667e-10

o1 : RR (of precision 100)

i2 : exp(1p100e-10)-1

o2 = 1.00000000005000000000937586788e-10

o2 : RR (of precision 100)