17 lines
No EOL
749 B
Text
17 lines
No EOL
749 B
Text
#include "operations.cuh"
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#include "sin.cuh"
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#include "asin.cuh"
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/*
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contributors: Inigo Quiles
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description: inverse cubic polynomial https://iquilezles.org/articles/smoothsteps/
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use: <float|float2|float3|float4> invCubic(<float|float2|float3|float4> value);
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*/
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#ifndef FNC_INVCUBIC
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#define FNC_INVCUBIC
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inline __host__ __device__ float invCubic(float v) { return 0.5-sin(asin(1.0f - 2.0f * v) / 3.0f); }
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inline __host__ __device__ float2 invCubic(const float2& v) { return 0.5-sin(asin(1.0f - 2.0f * v) / 3.0f); }
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inline __host__ __device__ float3 invCubic(const float3& v) { return 0.5-sin(asin(1.0f - 2.0f * v) / 3.0f); }
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inline __host__ __device__ float4 invCubic(const float4& v) { return 0.5-sin(asin(1.0f - 2.0f * v) / 3.0f); }
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#endif |