NVIDIA ISA Viewer

F2I

Floating Point To Integer Conversion

4 variants on SM90 (H100)

F2I.F16

R,R

distilled: @P0 F2I.U8.F16 R0, R0 ;

key: F2I_R_R

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	0	0	0	0	0	1	1	0	0	pred				operand 0								0	0	0	0	0	0	0	0	operand 1								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	modi		cABS	cNEG
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	modi 1	0	0	modi 2		NTZ	modi 2		FTZ	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
0	U8
1	S8

Modifier Group 2

Binary	Value
00	U8
01	U16
10	U32
11	???6

Modifier Group 3

Binary	Value
00	(default)
01	FLOOR
10	CEIL
11	TRUNC

Operand 1 Modifiers

Binary	Value
00	(default)
01	H1
10	INVALID2
11	INVALID3

F2I.F16

R,F

distilled: @P0 F2I.U8.F16 R0, 0 ;

key: F2I_R_F

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	0	0	0	0	0	1	0	0	1	pred				operand 0								0	0	0	0	0	0	0	0	operand 1																0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	modi 1	0	0	modi 2		NTZ	modi 2		FTZ	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
0	U8
1	S8

Modifier Group 2

Binary	Value
00	U8
01	U16
10	U32
11	???6

Modifier Group 3

Binary	Value
00	(default)
01	FLOOR
10	CEIL
11	TRUNC

F2I.F16

R,c[I][I]

distilled: @P0 F2I.U8.F16 R0, c[0x0] [0x0] ;

key: F2I_R_I_I

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	0	0	0	0	0	1	1	0	1	pred				operand 0								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	operand 2													operand 1	operand 2	operand 1				0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	modi 1	0	0	modi 2		NTZ	modi 2		FTZ	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
0	U8
1	S8

Modifier Group 2

Binary	Value
00	U8
01	U16
10	U32
11	???6

Modifier Group 3

Binary	Value
00	(default)
01	FLOOR
10	CEIL
11	TRUNC

F2I.F16

R,cx[UR][I]

distilled: @P0 F2I.U8.F16 R0, cx[UR0] [0x0] ;

key: F2I_R_UR_I

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	0	0	0	0	0	1	1	0	1	pred				operand 0								0	0	0	0	0	0	0	0	operand 1							0	operand 2															0	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	modi 1	0	0	modi 2		NTZ	modi 2		FTZ	0	0	0	1	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
0	U8
1	S8

Modifier Group 2

Binary	Value
00	U8
01	U16
10	U32
11	???6

Modifier Group 3

Binary	Value
00	(default)
01	FLOOR
10	CEIL
11	TRUNC