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Diffstat (limited to 'chapters/activation_funcs.adoc')
| -rw-r--r-- | chapters/activation_funcs.adoc | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/chapters/activation_funcs.adoc b/chapters/activation_funcs.adoc index 1acaf56..46fa19d 100644 --- a/chapters/activation_funcs.adoc +++ b/chapters/activation_funcs.adoc @@ -28,32 +28,6 @@ for_each(index in shape) { } ---- -==== ERF - -// erf(z) = \frac{2}{\sqrt{\pi}} \int_{0}^{z} e^{-t^2} dt -Error function: - -.Calculation for the error function -image::erf.svg["Error function", align="center"] - -For quantized integer data types, the TABLE operator should be used instead with -the following definition. - -The ERF table has 513 entries each of 16-bit precision and covering the input range -4.0 to +4.0 in steps of 1/64. - -[source,c++] ----- -int16_t erf_reference(int16_t x) { // input x range is -256 to + 256 inclusive - F64 v = (double)x / (double)64; - v = erf(v); - return round_to_nearest_int(32768.0 * v); -} - -generate_lookup_table(&erf_table, &erf_reference); ----- - -include::{generated}/operators/ERF.adoc[] - ==== SIGMOID Applies the sigmoid logistic function to each element of the input tensor. |