HP HP-28S - Page 18

HP-28S
This command can operate on lists of names. Ie. to erase all variables of the
current directory use MEMORY VARS PURGE
To erase variable PROG: 'PROG' PURGE
To erase variables X and Y: {X Y} PURGE
STO+ A quoted name must be present in stack level 1 or 2. The 2
nd
argument (real
or complex number, real or complex vector or matrix) will be added to the
variable:
'A' 6 STO+ and 6 'A' STO+ calculates A+6 and stores the result in A.
Note that even though "+" can be used with lists this is not supported for the
STO+ command.
Note: This command cannot operate on local variables!
STO- A quoted name must be present in stack level 1 or 2. The 2
nd
argument (real
or complex number, real or complex vector or matrix) will be substracted
from the variable (or vice versa depending on the order of arguments):
'A' 6 STO- Calculates A-6 and stores the result in A.
6 'A' STO- Calculates 6-A and stores the result in A.
Note: This command cannot operate on local variables!
STO* A quoted name must be present in stack level 1 or 2. The 2
nd
argument (real
or complex number, real or complex vector or matrix) will be multiplied to the
variable:
'A' 6 STO* and 6 'A' STO* calculates A*6 and stores the result in A.
Note: This command cannot operate on local variables!
STO/ A quoted name must be present in stack level 1 or 2. The 2
nd
argument (real
or complex number, real or complex vector or matrix) will be divided by the
variable (or vice versa depending on the order of arguments, see STO-):
'A' 6 STO/ Calculates A/6 and stores the result in A.
6 'A' STO/ Calculates 6/A and stores the result in A.
Note: This command cannot operate on local variables!
SNEG Negate the contents of a variable (real or complex number, real or complex
vector or matrix)
Note: This command cannot operate on local variables!
SINV Negate the contents of a variable (real or complex number, real or complex
square matrix)
Note: This command cannot operate on local variables!
SCONJ Conjugate the contents of a variable (real or complex number, real or
complex vector or matrix). This negates the imaginary part of the value.
Note: This command cannot operate on local variables!
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