Echelon Neuron C - Manual (Page 78)

58 Functions
Table 20. Signed 32-Bit Function Performance
Function Maximum Average
Add/subtract 0.10 0.08
Multiply 2.07 1.34
Divide 3.17 2.76
Remainder 3.15 2.75
Maximum/minimum 0.33 0.26
Absolute value 0.25 0.12
Negation 0.20 0.20
Arithmetic Comparison 0.33 0.26
Conversion to ASCII 26.95 16.31
Conversion from ASCII 7.55 4.28
Conversion to 16-bit integer 0.12 0.10
Conversion from 16-bit integer 0.10 0.10
Random number generation 0.12 0.11
Sign of number 0.15 0.11
Increment 0.07 0.04
Decrement 0.10 0.04
Multiply by two 0.10 0.10
Divide by two 0.30 0.16
Floating-Point Support Functions
The Neuron C compiler does not directly support the use of the ANSI C
arithmetic and comparison operators with floating-point values. However, there
is a complete library of functions for floating-point math. These functions are
listed in
Floating-Point Math on page 46. For example, in standard ANSI C, to
evaluate X = A + B * C in floating-point, the '+' and '*' infix operators can be used
as follows:
float X, A, B, C;
X = A + B * C;
With Neuron C, this can be expressed as follows: