Intel® Architecture Instruction Set Extensions Programming Reference

VFNMSUB132SS DEST, SRC2, SRC3
DEST[31:0] RoundFPControl_MXCSR(- (DEST[31:0]*SRC3[31:0]) - SRC2[31:0])
DEST[127:32] DEST[127:32]
DEST[VLMAX-1:128] 0
VFNMSUB213SS DEST, SRC2, SRC3
DEST[31:0] RoundFPControl_MXCSR(- (SRC2[31:0]*DEST[31:0]) - SRC3[31:0])
DEST[127:32] DEST[127:32]
DEST[VLMAX-1:128] 0
VFNMSUB231SS DEST, SRC2, SRC3
DEST[31:0] RoundFPControl_MXCSR(- (SRC2[31:0]*SRC3[63:0]) - DEST[31:0])
DEST[127:32] DEST[127:32]
DEST[VLMAX-1:128] 0
Intel C/C++ Compiler Intrinsic Equivalent
VFNMSUB132SS: __m128 _mm_fnmsub_ss (__m128 a, __m128 b, __m128 c);
VFNMSUB213SS: __m128 _mm_fnmsub_ss (__m128 a, __m128 b, __m128 c);
VFNMSUB231SS: __m128 _mm_fnmsub_ss (__m128 a, __m128 b, __m128 c);
SIMD Floating-Point Exceptions
Overflow, Underflow, Invalid, Precision, Denormal
Other Exceptions
See Exceptions Type 3
INSTRUCTION SET REFERENCE - FMA
Ref. # 319433-014 6-53