v_cos_f16 GPU Native ISA AMD Vector

V COS F16 Vector Arithmetic

v_cos_f16

Calculate the trigonometric cosine of a half-precision float value using IEEE rules and store the result into a vector register.

Encoding

Verified bit-level encoding data is not yet available for this instruction. The instruction-format classification below (VOP1) is well-documented and stable; exact per-target opcode/field bit positions have not yet been imported from a verified source.
Format VOP1
Execution Unit

Operands

Operand details have not yet been curated for this instruction.

GFX Target Compatibility

TargetSupport
gfx1100✅ Supported

Denormals are supported. Full range input is supported.

Related

More in Vector Arithmetic

Reference

AMDGPU / GFX ISA

Description

Calculate the trigonometric cosine of a half-precision float value using IEEE rules and store the result into a vector register. The operand is calculated by scaling the vector input by 2 PI.

Semantics

D0.f16 = cos(S0.f16 * 16'F(PI * 2.0))

Example

V_COS_F16(0xfc00) => 0xfe00     // cos(-INF) = NAN
V_COS_F16(0xfbff) => 0x3c00     // Most negative finite FP16
V_COS_F16(0x8000) => 0x3c00     // cos(-0.0) = 1
V_COS_F16(0x3400) => 0x0000     // cos(0.25) = 0

Reproduced from AMD's official "AMD Instinct MI300" ISA Reference Guide for technical accuracy.

Sources