Data Format; Data Type; Instruction Set - Renesas M32R-FPU Software Manual

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1.6 Data Format

1.6.1 Data Type

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.
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
floating-point single precision values
Figure 1.6.1 Data Type
b0
signed byte (8-bit) integer
S
b0
b0
S
b0
b0
S
b0
b0
S
CPU PROGRAMMING MODEL
b7
b7
b15
b15
8 9
E
S: Sign bit E: Exponent field
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M32R-FPU Software Manual (Rev.1.01)
1.6 Data Format
b31
b31
b31
F
F: Fraction field