2
CPU
2-8
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
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.
Figure 2.6.1 Data Types
Signed byte
(8-bit) integer
Unsigned byte
(8-bit) integer
Signed halfword
(16-bit) integer
Unsigned halfword
(16-bit) integer
Signed word
(32-bit) integer
Unsigned word
(32-bit) integer
Single-precision
floating-point number
b0
b7
b15
b31
S
b0 b1
b8 b9
b31
SE
F
S: Sign bit; E: Exponent field; F: Fraction field
2.6 Data Formats
