HP 15c - Manual (Page 53)

Section 2: Working with f 53
Keystrokes Display
´b4 030-42,21, 4 Subroutine for erf(x) or erfc(x).
|"1 031-43, 5, 1 Clears flag 1.
O1 032- 44 1 Stores 0 for erf(x), 1 for erfc(x)
® 033- 34
O0 034- 44 0
|a 035- 43 16 Calculates |x|.
1 036- 1
. 037- 48
6 038- 6
|T8 039-43,30, 8 Tests |x|>1.6.
t6 040- 22 6 Branch for |x|>1.6.
0 041- 0
l0 042- 45 0 Recalls x.
´f0 043-42,20, 0 Integrates
2 t
e

from 0 to x.
2 044- 2
* 045- 20
´b3 046-42,21, 3 Subroutine to divide by  .
|$ 047- 43,26
¤ 048- 11
÷ 049- 10
|n 050- 43 32
´b6 051-42,21, 6 Subroutine to integrate when |x| >
1.6.
|F1 052-43, 4, 1 Sets flag 1.
0 053- 0
l0 054- 45 0
|x 055- 43 11
” 056- 16
' 057- 12 Calculates 2 x
e

.
´f1 058-42,20, 1
Integrates (-ln u)
-1/2
from 0 to 2 x
e

G3 059- 32 3 Divides integral by  .
l0 060- 45 0
v 061- 36
|a 062- 43 16
÷ 063- 10 Calculates sign of x.
* 064- 20
l1 065- 45 1 Recalls 1 for erfc(x), 0 for erf(x).
|K 066- 43 36