diff options
Diffstat (limited to 'frontends/aiger/aigerparse.cc')
| -rw-r--r-- | frontends/aiger/aigerparse.cc | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/frontends/aiger/aigerparse.cc b/frontends/aiger/aigerparse.cc index 07e3cd6e0..463c5965b 100644 --- a/frontends/aiger/aigerparse.cc +++ b/frontends/aiger/aigerparse.cc @@ -55,6 +55,17 @@ inline int32_t from_big_endian(int32_t i32) { #define log_debug2(...) ; //#define log_debug2(...) log_debug(__VA_ARGS__) +static int decimal_digits(uint32_t n) { + static uint32_t digit_cutoff[9] = { + 10, 100, 1000, 10000, 100000, + 1000000, 10000000, 100000000, 1000000000 + }; + for (int i = 0; i < 9; ++i) { + if (n < digit_cutoff[i]) return i + 1; + } + return 10; +} + struct ConstEvalAig { RTLIL::Module *module; @@ -515,7 +526,7 @@ void AigerReader::parse_aiger_ascii() unsigned l1, l2, l3; // Parse inputs - int digits = ceil(log10(I)); + int digits = decimal_digits(I); for (unsigned i = 1; i <= I; ++i, ++line_count) { if (!(f >> l1)) log_error("Line %u cannot be interpreted as an input!\n", line_count); @@ -537,7 +548,7 @@ void AigerReader::parse_aiger_ascii() clk_wire->port_input = true; clk_wire->port_output = false; } - digits = ceil(log10(L)); + digits = decimal_digits(L); for (unsigned i = 0; i < L; ++i, ++line_count) { if (!(f >> l1 >> l2)) log_error("Line %u cannot be interpreted as a latch!\n", line_count); @@ -575,7 +586,7 @@ void AigerReader::parse_aiger_ascii() } // Parse outputs - digits = ceil(log10(O)); + digits = decimal_digits(O); for (unsigned i = 0; i < O; ++i, ++line_count) { if (!(f >> l1)) log_error("Line %u cannot be interpreted as an output!\n", line_count); @@ -643,7 +654,7 @@ void AigerReader::parse_aiger_binary() std::string line; // Parse inputs - int digits = ceil(log10(I)); + int digits = decimal_digits(I); for (unsigned i = 1; i <= I; ++i) { log_debug2("%d is an input\n", i); RTLIL::Wire *wire = module->addWire(stringf("$i%0*d", digits, i)); @@ -662,7 +673,7 @@ void AigerReader::parse_aiger_binary() clk_wire->port_input = true; clk_wire->port_output = false; } - digits = ceil(log10(L)); + digits = decimal_digits(L); l1 = (I+1) * 2; for (unsigned i = 0; i < L; ++i, ++line_count, l1 += 2) { if (!(f >> l2)) @@ -700,7 +711,7 @@ void AigerReader::parse_aiger_binary() } // Parse outputs - digits = ceil(log10(O)); + digits = decimal_digits(O); for (unsigned i = 0; i < O; ++i, ++line_count) { if (!(f >> l1)) log_error("Line %u cannot be interpreted as an output!\n", line_count); |