erf,erfinv

README.md

@@ -104,6 +104,8 @@ You can also get the node from comfy manager under the name of More math.
 - `sigm(x)`: Sigmoid function (1 / (1 + e^-x)).
 - `softmax(x, dim)`: Softmax normalization along last dimension (converts to probabilities).
 - `softmin(x, dim)`: Softmin normalization along specified dimension (inverse softmax).
+- `erf(x)`: Error function.
+- `erfinv(x)`: Inverse error function.
 
 ### Interpolation
 

more_math/Parser/MathExpr.g4

@@ -152,6 +152,8 @@ func1:
 	| ARGMAX LPAREN expr RPAREN			# ArgmaxFunc
 	| SOFTMAX LPAREN expr RPAREN		# SoftmaxFunc
 	| SOFTMIN LPAREN expr RPAREN		# SoftminFunc
+	| ERF LPAREN expr RPAREN			# ErfFunc
+	| ERFINV LPAREN expr RPAREN			# ErfinvFunc
 	| UNIQUE LPAREN expr RPAREN			# UniqueFunc
 	| FLATTEN LPAREN expr RPAREN		# FlattenFunc
 	| MOTION_MASK LPAREN expr RPAREN	# MotionMaskFunc
@@ -338,6 +340,8 @@ PERCENTILE: 'percentile' | 'prcnt';
 QUANTILE: 'quantile';
 DOT: 'dot';
 MOMENT: 'moment';
+ERF: 'erf';
+ERFINV: 'erfinv';
 
 ANY: 'any';
 ALL: 'all';

more_math/Parser/UnifiedMathVisitor.py

@@ -3511,5 +3511,15 @@ class UnifiedMathVisitor(MathExprVisitor):
             dim = int(dim_val.item()) if self._is_tensor(dim_val) else int(dim_val)
         
         return torch.roll(x, shifts=shift, dims=dim)
+
+    def visitErfFunc(self, ctx):
+        """erf(x) - error function"""
+        x = self._promote_to_tensor((yield ctx.expr()))
+        return torch.erf(x)
+
+    def visitErfinvFunc(self, ctx):
+        """erfinv(x) - inverse error function"""
+        x = self._promote_to_tensor((yield ctx.expr()))
+        return torch.erfinv(x)
     
     

web/script_text_input.js

@@ -12,7 +12,7 @@ const FUNCTIONS = new Set([
     "round", "gamma", "pow", "sigm", "clamp", "fft", "ifft", "angle", "print", "print_shape", "pshp", "nvl",
     "nan_to_num", "lerp", "step", "smoothstep", "fract", "relu", "softplus", "gelu", "sign", "map", "ezconvolution",
     "ezconv", "convolution", "conv", "swap", "permute", "perm", "reshape", "rshp", "range", "topk", "botk", "pinv",
-    "sum", "mean", "std", "var", "quartile", "quartil", "percentile", "prcnt", "quantile", "dot", "moment", "any",
+    "sum", "mean", "std", "var", "quartile", "quartil", "percentile", "prcnt", "quantile", "dot", "moment","erf","erfinv", "any",
     "all", "edge", "blur", "gaussian", "median", "mode", "cumsum", "cumprod", "topk_ind", "topk_indices", "botk_ind",
     "botk_indices", "cubic_ease", "cubic", "elastic_ease", "elastic", "sine_ease", "sine", "smootherstep", "dist",
     "distance", "remap", "cossim", "cosine_similarity", "count", "cnt", "length", "flatten", "append", "get_value",