CPU
2.6 Data Formats
2
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
S
b7
b7
Signed byte
(8-bit) integer
b0
Unsigned byte
(8-bit) integer
b0
S
b15
b15
Signed halfword
(16-bit) integer
b0
Unsigned halfword
(16-bit) integer
b0
S
b31
b31
Signed word
(32-bit) integer
b0
Unsigned word
(32-bit) integer
b0 b1
S
b8 b9
b31
Single-precision
floating-point number
E
F
S: Sign bit; E: Exponent field; F: Fraction field
Figure 2.6.1 Data Types
32180 Group User’s Manual (Rev.1.0)
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