Create a new util function that computes precision for floating-point…

… quantization. PiperOrigin-RevId: 395302655
Raverss · Sep 7, 2021 · efc2156 · efc2156
1 parent 7d1794c
commit efc2156
Showing 1 changed file with 31 additions and 0 deletions.
diff --git a/aqt/utils/common.py b/aqt/utils/common.py
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+# coding=utf-8
+# Copyright 2021 The Google Research Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""General util functions commonly used across different models."""
+
+
+def get_fp_spec(sig_bit, exp_bit):
+  """Create fp spec which defines precision for floating-point quantization.
+
+  Args:
+    sig_bit: the number of bits assigned for significand.
+    exp_bit: the number of bits assigned for exponent.
+
+  Returns:
+    fp spec
+  """
+  exp_bound = 2**(exp_bit - 1) - 1
+  prec = {'exp_min': -exp_bound, 'exp_max': exp_bound, 'sig_bits': sig_bit}
+  return prec