Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 4 REV 2.3 Manual page 209

FYL2XP1—Compute y  log
FPU Flags Affected
C1
C0, C2, C3
Additional Itanium System Environment Exceptions
Itanium Reg Faults Disabled FP Register Fault if PSR.dfl is 1, NaT Register Consumption
Floating-point Exceptions
#IS
#IA
#D
#U
#O
#P
Protected Mode Exceptions
#NM
Real Address Mode Exceptions
#NM
Virtual 8086 Mode Exceptions
#NM
4:202
(x +1) (Continued)
2
Set to 0 if stack underflow occurred.
Indicates rounding direction if the inexact-result exception (#P) is
generated: 0 = not roundup; 1 = roundup.
Undefined.
Abort.
Stack underflow occurred.
Either operand is an SNaN value or unsupported format.
Source operand is a denormal value.
Result is too small for destination format.
Result is too large for destination format.
Value cannot be represented exactly in destination format.
EM or TS in CR0 is set.
EM or TS in CR0 is set.
EM or TS in CR0 is set.
Volume 4: Base IA-32 Instruction Reference