LUT

Get LUT Entry and Interval Start

Represents GET_LUT_ENTRY_AND_INTERVAL_START instruction.

Intrinsics Prototype and Arguments

uint64_float64 v_f32_get_lut_entry_and_interval_start_b(float64 src, const int8_t shift, int switches=0, uint64_float64 income={}, bool predicate=1, bool polarity=0)

uint64_float64 v_f32_get_lut_entry_and_interval_start_vb(float64 src, const int8_t shift, int switches, uint64_float64 income, bool64 predicate, bool polarity=0)

ushort128_bfloat128 v_bf16_get_lut_entry_and_interval_start_b(bfloat128 src, const int8_t shift, int switches=0, ushort128_bfloat128 income={}, bool predicate=1, bool polarity=0)

ushort128_bfloat128 v_bf16_get_lut_entry_and_interval_start_vb(bfloat128 src, const int8_t shift, int switches, ushort128_bfloat128 income, bool128 predicate, bool polarity=0)

src

Input value (SRC1).

shift

Significand shift

switches

Instruction switches.

income

This value is returned if the predicate is false.

predicate

Predicate value for the instruction.

polarity

True if polarity of the predicate is inverted.

Allowed switches are:

  • [FUNC_VARIANT] - Determines the variant of the function, when no switch is set - all functions other then tanh/sqrt/rsqrt/sin/cos.

    • SW_LUT_TANH

    • SW_LUT_SQRT_RSQRT

    • SW_LUT_SIN_COS

    • SW_LUT_LOG

Pair of the interval and its offset for the special function approximation.