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INSTRUCTION SET REFERENCE
UCOMISS—Unordered Scalar Single-FP compare and set EFLAGS
(Continued)
Intel C/C++ Compiler Intrinsic Equivalent
_mm_ucomieq_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a equal to b. If a and b are equal, 1 is returned.
Otherwise 0 is returned.
_mm_ucomilt_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a less than b. If a is less than b, 1 is returned.
Otherwise 0 is returned.
_mm_ucomile_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a less than or equal to b. If a is less than or equal
to b, 1 is returned. Otherwise 0 is returned.
_mm_ucomigt_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a greater than b. If a is greater than b are equal,
1 is returned. Otherwise 0 is returned.
_mm_ucomige_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a greater than or equal to b. If a is greater than
or equal to b, 1 is returned. Otherwise 0 is returned.
_mm_ucomineq_ss(__m128 a, __m128 b)
Compares the lower SP FP value of a and b for a not equal to b. If a and b are not equal, 1 is
returned. Otherwise 0 is returned.
Exceptions
None.
Numeric Exceptions
Invalid (if sNaN operands), Denormal. Integer EFLAGS values will not be updated in the pres-
ence of unmasked numeric exceptions.
