r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 157

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Table 6.1
Floating-point number value v is determined as follows:
Table 6.2 shows the ranges of the various numbers in hexadecimal notation. For the signaling non-
number and quiet non-number, see section 6.2.2, Non-Numbers (NaN). For the denormalized
number, see section 6.2.3, Denormalized Numbers.
Parameter
Total bit width
Sign bit
Exponent field
Fraction field
Precision
Bias
E
E
max
min
If E = E
If E = E
If E
If E = E
If E = E
min
≤ E ≤ E
max
max
min
min
Floating-Point Number Formats and Parameters
– 1 and f ≠ 0, v = (–1)
– 1 and f = 0, v = (–1)
+ 1 and f ≠ 0, v is a non-number (NaN) irrespective of sign s
+ 1 and f = 0, v = (–1)
max
, v = (–1)
Single-Precision
32 bits
1 bit
8 bits
23 bits
24 bits
+127
+127
–126
s
2
E
(1.f) [normalized number]
s
s
s
2
0 [positive or negative zero]
(infinity) [positive or negative infinity]
Emin
(0.f) [denormalized number]
52 bits
53 bits
Double-Precision
64 bits
1 bit
11 bits
+1023
+1023
–1022
Rev.1.00 Jan. 10, 2008 Page 127 of 1658
6. Floating-Point Unit (FPU)
REJ09B0261-0100