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log10.3Cg

Langue: en

Version: 348636 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

log10 - returns the base-10 logarithm of scalars and vectors

   float  log10(float a);
   float1 log10(float1 a);
   float2 log10(float2 a);
   float3 log10(float3 a);
   float4 log10(float4 a);

   half   log10(half a);
   half1  log10(half1 a);
   half2  log10(half2 a);
   half3  log10(half3 a);
   half4  log10(half4 a);

   fixed  log10(fixed a);
   fixed1 log10(fixed1 a);
   fixed2 log10(fixed2 a);
   fixed3 log10(fixed3 a);
   fixed4 log10(fixed4 a);

Returns the base-10 logarithm a.

For vectors, the returned vector contains the base-10 logarithm of each element of the input vector.

   float3 log10(float3 a)
   {
     float3 rv;
     int i;

     for (i=0; i<3; i++) {
       rv[i] = log10(a[i]);  // this is the ANSI C standard library log10()
     }
     return rv;
   }

log10 is typically implemented with a native base-10 logarithm instruction.

log10 is fully supported in all profiles unless otherwise specified.

Support in the fp20 is limited to constant compile-time evaluation.