Renesas M32R-FPU 用户手册

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M32R-FPU Software Manual (Rev.1.01)

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.

CPU PROGRAMMING MODEL

1.6 Data Format

b7

b0

signed byte (8-bit) integer

unsigned byte (8-bit) integer

signed halfword (16-bit) integer

b0

b0

b0

b0

b0

b7

b15

b15

b31

b31

S

S

S

S: Sign bit

E: Exponent field

F: Fraction field

unsigned halfword (16-bit) integer

signed word (32-bit) integer

b0

8

9

b31

S

E

F

floating-point single precision values

unsigned word (32-bit) integer

Figure 1.6.1 Data Type