Totalview® for HPC Reference Guide : PART III Platforms and Operating Systems : Chapter 11 Architectures : Power Architectures : Power FPSCR Register
Power FPSCR Register
For your convenience, TotalView interprets the bit settings of the Power FPSCR register. You can edit the value of the FPSCR and set it to any of the bit settings outlined in the following table.
Value
Bit Setting
Meaning
0x80000000
FX
Floating-point exception summary
0x40000000
FEX
Floating-point enabled exception summary
0x20000000
VX
Floating-point invalid operation exception summary
0x10000000
OX
Floating-point overflow exception
0x08000000
UX
Floating-point underflow exception
0x04000000
ZX
Floating-point zero divide exception
0x02000000
XX
Floating-point inexact exception
0x01000000
VXSNAN
Floating-point invalid operation exception for SNaN
0x00800000
VXISI
Floating-point invalid operation exception: ¥ - ¥, or infinity‑infinity
0x00400000
VXIDI
Floating-point invalid operation exception: ¥ / ¥, or infinity divided by infinity
0x00200000
VXZDZ
Floating-point invalid operation exception: 0 / 0
0x00100000
VXIMZ
Floating-point invalid operation exception: ¥ * ¥, or infinity times infinity
0x00080000
VXVC
Floating-point invalid operation exception: invalid compare
0x00040000
FR
Floating-point fraction rounded
0x00020000
FI
Floating-point fraction inexact
0x00010000
FPRF=(C)
Floating-point result class descriptor
0x00008000
FPRF=(L)
Floating-point less than or negative
0x00004000
FPRF=(G)
Floating-point greater than or positive
0x00002000
FPRF=(E)
Floating-point equal or zero
0x00001000
FPRF=(U)
Floating-point unordered or NaN
0x00011000
FPRF=(QNAN)
Quiet NaN; alias for FPRF=(C+U)
0x00009000
FPRF=(-INF)
-Infinity; alias for FPRF=(L+U)
0x00008000
FPRF=(-NORM)
-Normalized number; alias for FPRF=(L)
0x00018000
FPRF=(-DENORM)
-Denormalized number; alias for FPRF=(C+L)
0x00012000
FPRF=(-ZERO)
-Zero; alias for FPRF=(C+E)
0x00002000
FPRF=(+ZERO)
+Zero; alias for FPRF=(E)
0x00014000
FPRF=(+DENORM)
+Denormalized number; alias for FPRF=(C+G)
0x00004000
FPRF=(+NORM)
+Normalized number; alias for FPRF=(G)
0x00005000
FPRF=(+INF)
+Infinity; alias for FPRF=(G+U)
0x00000400
VXSOFT
Floating-point invalid operation exception: software request
0x00000200
VXSQRT
Floating-point invalid operation exception: square root
0x00000100
VXCVI
Floating-point invalid operation exception: invalid integer convert
0x00000080
VE
Floating-point invalid operation exception enable
0x00000040
OE
Floating-point overflow exception enable
0x00000020
UE
Floating-point underflow exception enable
0x00000010
ZE
Floating-point zero divide exception enable
0x00000008
XE
Floating-point inexact exception enable
0x00000004
NI
Floating-point non-IEEE mode enable
0x00000000
RN=NEAR
Round to nearest
0x00000001
RN=ZERO
Round toward zero
0x00000002
RN=PINF
Round toward +infinity
0x00000003
RN=NINF
Round toward -infinity