PyTorch
API: torch.signbit
Strategy: Direct Mapping
JAX (Core)
API: jax.numpy.signbit
Strategy: Direct Mapping
NumPy
API: numpy.signbit
Strategy: Direct Mapping
Keras
API: keras.ops.less
Strategy: Macro 'keras.ops.less({input}, 0)'
TensorFlow
API: tf.math.sign
Strategy: Macro 'tf.math.less({input}, 0)'
Apple MLX
API: mlx.core.less
Strategy: Macro '{input} < 0'
Flax NNX
API: jax.numpy.signbit
Strategy: Direct Mapping
PaxML / Praxis
API: jax.numpy.signbit
Strategy: Direct Mapping