feat: pytorch math-operations-a

brainpy/_src/math/compat_pytorch.py

@@ -4,7 +4,7 @@
 import jax.numpy as jnp
 import numpy as np
 
-from .ndarray import Array, _as_jax_array_
+from .ndarray import Array, _as_jax_array_, _return, _check_out
 from .compat_numpy import (
   concatenate, shape
 )
@@ -86,3 +86,145 @@ def unsqueeze(input: Union[jax.Array, Array], dim: int) -> Array:
   """
     input = _as_jax_array_(input)
     return Array(jnp.expand_dims(input, dim))
+
+
+# Math operations
+def abs(input: Union[jax.Array, Array],
+        *, out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.abs(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+absolute = abs
+
+def acos(input: Union[jax.Array, Array],
+         *, out: Optional[Union[Array,jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arccos(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arccos = acos
+
+def acosh(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array,jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arccosh(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arccosh = acosh
+
+def add(input: Union[jax.Array, Array, jnp.number],
+        other: Union[jax.Array, Array, jnp.number],
+        *, alpha: Optional[jnp.number] = 1,
+        out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  other = _as_jax_array_(other)
+  other = jnp.multiply(alpha, other)
+  r = jnp.add(input, other)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+def addcdiv(input: Union[jax.Array, Array, jnp.number],
+            tensor1: Union[jax.Array, Array, jnp.number],
+            tensor2: Union[jax.Array, Array, jnp.number],
+            *, value: jnp.number = 1,
+            out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  tensor1 = _as_jax_array_(tensor1)
+  tensor2 = _as_jax_array_(tensor2)
+  other = jnp.divide(tensor1, tensor2)
+  return add(input, other, alpha=value, out=out)
+
+def addcmul(input:  Union[jax.Array, Array, jnp.number],
+            tensor1: Union[jax.Array, Array, jnp.number],
+            tensor2: Union[jax.Array, Array, jnp.number],
+            *, value: jnp.number = 1,
+            out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  tensor1 = _as_jax_array_(tensor1)
+  tensor2 = _as_jax_array_(tensor2)
+  other = jnp.multiply(tensor1, tensor2)
+  return add(input, other, alpha=value, out=out)
+
+def angle(input: Union[jax.Array, Array, jnp.number],
+          *, out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.angle(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+def asin(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array,jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arcsin(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arcsin = asin
+
+def asinh(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array,jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arcsinh(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arcsinh = asinh
+
+def atan(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array,jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arctan(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arctan = atan
+
+def atanh(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arctanh(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arctanh = atanh
+
+def atan2(input: Union[jax.Array, Array],
+          *, out: Optional[Union[Array, jax.Array, np.ndarray]] = None) -> Optional[Array]:
+  input = _as_jax_array_(input)
+  r = jnp.arctan2(input)
+  if out is None:
+    return _return(r)
+  else:
+    _check_out(out)
+    out.value = r
+
+arctan2 = atan2

brainpy/_src/math/tests/test_compat_pytorch.py

@@ -7,6 +7,7 @@
 import unittest
 import brainpy.math as bm
 from brainpy._src.math import compat_pytorch
+import brainpy._src.math.compat_pytorch as torch
 
 from absl .testing import parameterized
 
@@ -45,3 +46,33 @@ def test1(self):
     a = a.expand(1, 6, 4, -1)
     self.assertTrue(a.shape == (1, 6, 4, 5))
 
+class TestMathOperators(unittest.TestCase):
+  def test_abs(self):
+    arr = compat_pytorch.Tensor([-1, -2, 3])
+    a = compat_pytorch.abs(arr)
+    res = compat_pytorch.Tensor([1, 2, 3])
+    b = compat_pytorch.absolute(arr)
+    self.assertTrue(bm.array_equal(a, res))
+    self.assertTrue(bm.array_equal(b, res))
+
+  def test_add(self):
+    a = compat_pytorch.Tensor([0.0202,  1.0985,  1.3506, -0.6056])
+    a = compat_pytorch.add(a, 20)
+    res = compat_pytorch.Tensor([20.0202,  21.0985,  21.3506,  19.3944])
+    self.assertTrue(bm.array_equal(a, res))
+    b = compat_pytorch.Tensor([-0.9732, -0.3497,  0.6245,  0.4022])
+    c = compat_pytorch.Tensor([[0.3743], [-1.7724], [-0.5811], [-0.8017]])
+    b = compat_pytorch.add(b, c, alpha=10)
+    self.assertTrue(b.shape == (4, 4))
+    print("b:", b)
+
+  def test_addcdiv(self):
+    rng = bm.random.default_rng(999)
+    t = rng.rand(1, 3)
+    t1 = rng.randn(3, 1)
+    rng = bm.random.default_rng(199)
+    t2 = rng.randn(1, 3)
+    res = torch.addcdiv(t, t1, t2, value=0.1)
+    print("t + t1/t2 * value:", res)
+    res = torch.addcmul(t, t1, t2, value=0.1)
+    print("t + t1*t2 * value:", res)

brainpy/math/compat_pytorch.py

@@ -4,5 +4,23 @@
 
   flatten as flatten,
   cat as cat,
-
+  unsqueeze as unsqueeze,
+  abs as abs,
+  absolute as absolute,
+  acos as acos,
+  arccos as arccos,
+  acosh as acosh,
+  arccosh as arccosh,
+  add as add,
+  addcdiv as addcdiv,
+  addcmul as addcmul,
+  angle as angle,
+  asin as asin,
+  arcsin as arcsin,
+  asinh as asinh,
+  arcsin as arcsin,
+  atan as atan,
+  arctan as arctan,
+  atan2 as atan2,
+  atanh as atanh,
 )