HP -42S Manual page 34

Name Description
WMEAN Weighted mean. Return the mean of x-values weighted by the y-values Σxy / Σ y
WRAP Select Wrap mode, which prevents the indexed matrix from growing.
X< > Swaps the contents of the x-register with another register or variable. Parameter:
register or variable (indirect allowed)
X<>Y Swaps the contents of the x- and y-registers.
X<O? X less than zero test. If true, execute the next program line; if false, skip the next
program line
X<Y? X less than y test. If true, execute the next program line; if false, skip the next
program line
X≤O? X less than or equal to zero test. If true, execute the next program line; if false, skip
the next program line
X≤Y? X less than or equal to y test. If true, execute the next program line; if false, skip the
next program line
X=O? X equal to zero test. If true, execute the next program line; if false, skip the next
program line
X=Y? X equal to y test. If true, execute the next program line; if false, skip the next program
line
X≠O? X not equal to zero test. If true, execute the next program line; if false, skip the next
program line
X≠Y? X not equal to y test. If true, execute the next program line; if false, skip the next
program line
X>O? X greater than zero test. If true, execute the next program line; if false, skip the next
program line
X>Y? X greater than y test. If true, execute the next program line; if false, skip the next
program line
X≥O? X greater than or equal to zero test. If true, execute the next program line; if false,
skip the next program line
X≥Y? X greater than or equal to y test. If true, execute the next program line; if false, skip
the next program line
XEQ Execute a function or program. Parameter: function or label (indirect allowed)
XOR Logical XOR (exclusive OR). Returns x XOR y.
XTOA X to Alpha. Appends a character (specified by the code in the x-register) to the Alpha
register. If the x-register contains an Alpha string, appends the entire string.
X↑2 Square. Returns x
YlNT y-intercept. Returns the y-intercept of the curve fitted to the current statistical data.
Y↑X Power. Returns y
1/x Reciprocal. Returns 1/x.
10↑X Common exponential. Returns 10
+ Addition. Returns y + x.
– Subtraction. Returns y – x.
× Multiplication. Returns x × y.
÷ Division. Returns y / x.
+/– Change the sign of the number in the x-register. While entering an exponent, can also
be used to change the sign of the exponent.
Σ+ Summation plus. Accumulate a pair of x- and y values into the summation registers.
Σ– Summation minus. Subtract a pair of x- and y-values from the summation registers.
ΣREG Summation registers. Defines which storage register begins the block of summation
registers. Parameter: register number (indirect allowed)
ΣREG? Return the register number of the first summation register.
→DEC To decimal. Converts the octal (base 8) representation of a number to decimal (base
10). Note: This function is included to provide program compatibility with the HP-41
(which uses the function name DEC).
→DEG To degrees. Convert an angle-value from radians to degrees. Returns x×(180/π).
→HMS To hours, minutes, and seconds. Convert x from a decimal fraction to a minutes-
2
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x
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