R5S72011 RENESAS [Renesas Technology Corp], R5S72011 Datasheet - Page 91

• Manufacturer Part Number: R5S72011
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

3.1
The FPU has the following features.
• Conforms to IEEE754 standard
• 16 single-precision floating-point registers (can also be referenced as eight double-precision
• Two rounding modes: Round to nearest and round to zero
• Denormalization modes: Flush to zero
• Five exception sources: Invalid operation, divide by zero, overflow, underflow, and inexact
• Comprehensive instructions: Single-precision, double-precision, and system control
When the FD bit in SR is set to 1, the FPU cannot be used, and an attempt to execute an FPU
instruction will cause an FPU disable exception.
3.2
3.2.1
A floating-point number consists of the following three fields:
• Sign (s)
• Exponent (e)
• Fraction (f)
This LSI can handle single-precision and double-precision floating-point numbers, using the
formats shown in figures 3.1 and 3.2.
registers)
Features
Data Formats
Floating-Point Format
31
s
Figure 3.1 Format of Single-Precision Floating-Point Number
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Section 3 Floating-Point Unit (FPU)
e
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f
Section 3 Floating-Point Unit (FPU)
REJ09B0321-0200
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