Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1828

MINSS: Scalar Single-FP Minimum (Continued)
Additional Itanium System Environment Exceptions
Itanium Reg Faults
Itanium Mem Faults VHPT Data Fault, Data TLB Fault, Alternate Data TLB Fault, Data
Note that if only one source is a NaN for these instructions, the Src2 operand (either
Comments:
NaN or real value) is written to the result; this differs from the behavior for other
instructions as defined in
regardless of which source operand contains the NaN. The upper three operands are
still bypassed from the src1 operand, as in all other scalar operations. This approach for
MINSS allows compilers to use the MINSS instruction for common C conditional
constructs. If instead of this behavior, it is required that the NaN source operand be
returned, the min/max functionality can be emulated using a sequence of instructions:
comparison followed by AND, ANDN and OR.
4:526
Disabled FP Register Fault if PSR.dfl is 1, NaT Register
Consumption Fault
Page Not Present Fault, Data NaT Page Consumption Abort, Data
Key Miss Fault, Data Key Permission Fault, Data Access Rights
Fault, Data Access Bit Fault
Table 4-3, which is to always write the NaN to the result,
Volume 4: IA-32 SSE Instruction Reference