482
Floating-point Math Instructions Section 3-14
Description FLT(452) converts the 16-bit signed binary value in S to 32-bit floating-point
data (IEEE754-format) and places the result in R+1 and R. A single 0 is
added after the decimal point in the floating-point result.
Only values within the range of –32,768 to 32,767 can be specified for S. To
convert signed binary data outside of that range, use FLTL(453).
Example conversions:
A signed binary value of 3 is converted to 3.0.
A signed binary value of –3 is converted to –3.0.
Flags
Precautions The content of S must contain signed binary data with a (decimal) value in the
range of –32,768 to 32,767.
Holding Bit Area H0 to H511 H0 to H510
Auxiliary Bit Area A0 to A959 A448 to A958
Timer Area T0000 to T4095 T0000 to T4094
Counter Area C0000 to C4095 C0000 to C4094
DM Area D0 to D32767 D0 to D32766
Indirect DM addresses
in binary
@ D0 to @ D32767
Indirect DM addresses
in BCD
*D0 to *D32767
Constants #0000 to #FFFF (binary) ---
Data Registers DR0 to DR15 ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area S R
R+1 R
S
Floating-point data (32 bits)
Signed binary data (16 bits)
Name Label Operation
Error Flag ER OFF
Equals Flag = ON if both the exponent and mantissa of the result are 0.
OFF in all other cases.
Negative Flag N ON if the result is negative.
OFF in all other cases.
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