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Chapter 4. Ladder Diagram (LD) Programming
4.1 Advanced Math Functions
The Advanced Math functions perform logarithmic, exponential, square root, trigonometric, and
inverse trigonometric operations.
Function
Mnemonic
Exponential EXP_REAL
EXP_LREAL
EXPT_REAL
EXPT_LREAL
Inverse Trig
ACOS_REAL
ACOS_LREAL
ASIN_REAL
ASIN_LREAL
ATAN_REAL
ATAN_LREAL
Logarithmic LN_REAL
LN_LREAL
LOG_REAL
LOG_LREAL
Square Root SQRT_DINT
SQRT_INT
SQRT_REAL
SQRT_LREAL
Trig
COS_REAL
COS_LREAL
SIN_REAL
SIN_LREAL
TAN_REAL
TAN_LREAL
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PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual
Description
Raises e to the value specified in IN (e
logarithm of the IN operand.
Calculates IN1 to the IN2 power (IN1
Calculates the inverse cosine of the IN operand and expresses the result in
radians.
Calculates the inverse sine of the IN operand and expresses the result in
radians.
Calculates the inverse tangent of the IN operand and expresses the result in
radians.
Calculates the natural logarithm of the operand IN.
Calculates the base 10 logarithm of the operand IN.
Calculates the square root of the operand IN, a double-precision integer, and
stores in Q the double-precision integer portion of the square root of the
input IN.
Calculates the square root of the operand IN, a single-precision integer, and
stores in Q the single-precision integer portion of the square root of the input
IN.
Calculates the square root of the operand IN, a real number, and stores the
real-number result in Q
Calculates the cosine of the operand IN, where IN is expressed in radians.
Calculates the sine of the operand IN, where IN is expressed in radians.
Calculates the tangent of the operand IN, where IN is expressed in radians.
IN
). Calculates the inverse natural
IN2
).
GFK-2950C
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