diff options
Diffstat (limited to '05/util.b')
| -rw-r--r-- | 05/util.b | 38 |
1 files changed, 34 insertions, 4 deletions
@@ -1,3 +1,11 @@ +function sign_extend_32_to_64 + argument n + local c + c = n > 31 + n |= c * 0xffffffff00000000 + return n + + ; multiply two 64-bit signed numbers to a 128-bit number function full_multiply_signed argument a @@ -456,15 +464,27 @@ function fputn_signed argument fd argument n if n < 0 goto fputn_negative - - fputn(fd, n) - return - + fputn(fd, n) + return :fputn_negative fputc(fd, '-) n = 0 - n fputn(fd, n) return + +; like fputn_signed, but include the sign even if it's zero or positive +function fputn_with_sign + argument fd + argument n + if n < 0 goto fputn_with_sign_negative + fputc(fd, '+) + fputn(fd, n) + return + :fputn_with_sign_negative + fputc(fd, '-) + n = 0 - n + fputn(fd, n) + return :hex_digits string 0123456789abcdef @@ -527,6 +547,11 @@ function putn_signed fputn_signed(1, n) return +function putn_with_sign + argument n + fputn_with_sign(1, n) + return + function putnln argument n fputn(1, n) @@ -539,6 +564,11 @@ function putnln_signed fputc(1, 10) return +function putnln_with_sign + argument n + fputn_with_sign(1, n) + fputc(1, 10) + return function fputc argument fd |