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# Test creating small integers without heap allocation in nan-boxing mode.
try:
import micropython
except ImportError:
print("SKIP")
raise SystemExit
try:
# Test for nan-box build by allocating a float while heap is locked.
# This should pass on nan-box builds.
micropython.heap_lock()
float(123)
micropython.heap_unlock()
except:
micropython.heap_unlock()
print("SKIP")
raise SystemExit
# Check that nan-boxing uses 64-bit floats (eg it's not object representation C).
if float("1e100") == float("inf"):
print("SKIP")
raise SystemExit
micropython.heap_lock()
print(int("0x80000000"))
micropython.heap_unlock()
# This is the most positive small integer.
micropython.heap_lock()
print(int("0x3fffffffffff"))
micropython.heap_unlock()
# This is the most negative small integer.
micropython.heap_lock()
print(int("-0x3fffffffffff") - 1)
micropython.heap_unlock()
x = 1
micropython.heap_lock()
print((x << 31) + 1)
micropython.heap_unlock()
x = 1
micropython.heap_lock()
print((x << 45) + 1)
micropython.heap_unlock()
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