The zarith-ppx package provides literals
for arbitrary-precision integers and rationals
with the Zarith library.
Here are some examples:
# 1z ;;
- : Z.t = 1
# 1.234e40z ;;
- : Z.t = 12340000000000000000000000000000000000000
# 0x18z (* Hexadecimal *);;
- : Z.t = 24
# 1.2q ;;
- : Q.t = 6/5
# 2.45e10q ;;
- : Q.t = 24500000000
# 2.45e-5q ;;
- : Q.t = 49/2000000
# -0O123q (* Octal *);;
- : Q.t = -83It also raises errors for incorrect literals:
# 1.234e2z ;;
Line 1, characters 1-9:
Error: This literal does not fit in an integer. You should use a rational
number.This package depends on vanilla Zarith, but the generated code is compatible with any cross-compiled version of Zarith such as zarith-freestanding and zarith-xen.