diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/systemc/core/sc_time.cc | 114 | ||||
| -rw-r--r-- | src/systemc/ext/core/sc_time.hh | 3 |
2 files changed, 77 insertions, 40 deletions
diff --git a/src/systemc/core/sc_time.cc b/src/systemc/core/sc_time.cc index 167b37494..002121e88 100644 --- a/src/systemc/core/sc_time.cc +++ b/src/systemc/core/sc_time.cc @@ -33,19 +33,47 @@ namespace sc_core { -sc_time::sc_time() +namespace { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); -} -sc_time::sc_time(double, sc_time_unit) +const char *TimeUnitNames[] = { + [SC_FS] = "fs", + [SC_PS] = "ps", + [SC_NS] = "ns", + [SC_US] = "us", + [SC_MS] = "ms", + [SC_SEC] = "s" +}; + +double TimeUnitScale[] = { + [SC_FS] = 1.0e-15, + [SC_PS] = 1.0e-12, + [SC_NS] = 1.0e-9, + [SC_US] = 1.0e-6, + [SC_MS] = 1.0e-3, + [SC_SEC] = 1.0 +}; + +} // anonymous namespace + +sc_time::sc_time() : val(0) {} + +sc_time::sc_time(double d, sc_time_unit tu) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + val = 0; + if (d != 0) { + //XXX Assuming the time resolution is 1ps. + double scale = TimeUnitScale[tu] / TimeUnitScale[SC_PS]; + // Accellera claims there is a linux bug, and that these next two + // lines work around them. + volatile double tmp = d * scale + 0.5; + val = static_cast<uint64_t>(tmp); + } } -sc_time::sc_time(const sc_time &) +sc_time::sc_time(const sc_time &t) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + val = t.val; } sc_time::sc_time(double, bool) @@ -59,17 +87,16 @@ sc_time::sc_time(sc_dt::uint64, bool) } sc_time & -sc_time::operator = (const sc_time &) +sc_time::operator = (const sc_time &t) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + val = t.val; return *this; } sc_dt::uint64 sc_time::value() const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return 0; + return val; } double @@ -93,58 +120,52 @@ sc_time::to_string() const } bool -sc_time::operator == (const sc_time &) const +sc_time::operator == (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return true; + return val == t.val; } bool -sc_time::operator != (const sc_time &) const +sc_time::operator != (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return false; + return val != t.val; } bool -sc_time::operator < (const sc_time &) const +sc_time::operator < (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return false; + return val < t.val; } bool -sc_time::operator <= (const sc_time &) const +sc_time::operator <= (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return true; + return val <= t.val; } bool -sc_time::operator > (const sc_time &) const +sc_time::operator > (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return false; + return val > t.val; } bool -sc_time::operator >= (const sc_time &) const +sc_time::operator >= (const sc_time &t) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return true; + return val >= t.val; } sc_time & -sc_time::operator += (const sc_time &) +sc_time::operator += (const sc_time &t) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + val += t.val; return *this; } sc_time & -sc_time::operator -= (const sc_time &) +sc_time::operator -= (const sc_time &t) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + val -= t.val; return *this; } @@ -163,16 +184,29 @@ sc_time::operator /= (double) } void -sc_time::print(std::ostream &) const +sc_time::print(std::ostream &os) const { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + if (val == 0) { + os << "0 s"; + } else { + //XXX Assuming the time resolution is 1ps. + sc_time_unit tu = SC_PS; + uint64_t scaled = val; + while (tu < SC_SEC && (scaled % 1000) == 0) { + tu = (sc_time_unit)((int)tu + 1); + scaled /= 1000; + } + + os << scaled << ' ' << TimeUnitNames[tu]; + } } sc_time -sc_time::from_value(sc_dt::uint64) +sc_time::from_value(sc_dt::uint64 u) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); - return sc_time(); + sc_time t; + t.val = u; + return t; } sc_time @@ -232,9 +266,9 @@ operator / (const sc_time &, const sc_time &) } std::ostream & -operator << (std::ostream &os, const sc_time &) +operator << (std::ostream &os, const sc_time &t) { - warn("%s not implemented.\n", __PRETTY_FUNCTION__); + t.print(os); return os; } diff --git a/src/systemc/ext/core/sc_time.hh b/src/systemc/ext/core/sc_time.hh index 362834cce..014755522 100644 --- a/src/systemc/ext/core/sc_time.hh +++ b/src/systemc/ext/core/sc_time.hh @@ -84,6 +84,9 @@ class sc_time static sc_time from_value(sc_dt::uint64); static sc_time from_seconds(double); static sc_time from_string(const char *str); + + private: + uint64_t val; }; const sc_time operator + (const sc_time &, const sc_time &); |