32180 Datasheet, PDF (45/839 Pages) Renesas Technology Corp – 32-Bit RISC Single-Chip Microcomputers M32R Family M32R/ECU Series

2
CPU
2.6 Data Formats
2.6 Data Formats
2.6.1 Data Types
The data types that can be handled by the M32R-FPU instruction set are signed or unsigned 8, 16 and 32-bit
integers and single-precision floating-point numbers. The signed integers are represented by 2’s complements.
b0
b7
Signed byte
(8-bit) integer
S
b0
b7
Unsigned byte
(8-bit) integer
b0
b15
Signed halfword
S
(16-bit) integer
b0
b15
Unsigned halfword
(16-bit) integer
b0
b31
Signed word
S
(32-bit) integer
b0
b31
Unsigned word
(32-bit) integer
b0 b1
b8 b9
Single-precision
S
E
floating-point number
b31
F
S: Sign bit; E: Exponent field; F: Fraction field
Figure 2.6.1 Data Types
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32180 Group User’s Manual (Rev.1.0)