Echelon Neuron C - Manual (Page 76)

56 Functions
Miscellaneous Signed 32-bit Functions
Table 16 lists miscellaneous signed 32-bit functions.
Table 16. Signed 32-Bit Functions
Short
Name Function
sign int s32_sign(const s32_type *arg);
Sign function, returns +1 if the argument is positive, 0 if the argument
is zero, and -1 if the argument is negative.
inc void s32_inc(s32_type *arg);
Increments a signed 32-bit integer.
dec void s32_dec(s32_type *arg);
Decrements a signed 32-bit integer.
mul2 void s32_mul2(s32_type *arg);
Multiplies a signed 32-bit integer by two.
div2 void s32_div2( s32_type *arg );
Divides a signed 32-bit integer by two.
rand void s32_rand(s32_type *arg);
Returns a random integer uniformly distributed in the range
[-2,147,483,648 to +2,147,483,647].
Integer Conversions
Table 17 lists the integer conversion functions.
Table 17. Integer Conversions
Short
Name Function
to
slong signed long s32_to_slong(const s32_type *arg);
Converts a signed 32-bit integer to a Neuron C signed long integer
(range -32,768 to +32,767). Overflow is ignored.
to
ulong unsigned long s32_to_ulong(const s32_type *arg);
Converts a signed 32-bit integer to a Neuron C unsigned long integer
(range 0 to 65,535). Overflow is ignored.
from
slong void s32_from_slong(signed long arg1, s32_type *arg2);
Converts a Neuron C signed long integer (range -32,768 to +32,767) to a
signed 32-bit integer.