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Support $sscanf %t

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This commit is contained in:
Wilson Snyder
2025-09-01 14:40:22 -04:00
parent 33b838f139
commit 67f26508ba
6 changed files with 101 additions and 12 deletions
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include/verilated.cpp
+21 -2
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@@ -1329,7 +1329,7 @@ IData _vl_vsscanf(FILE* fp, // If a fscanf
default: {
// Deal with all read-and-scan somethings
// Note LSBs are preserved if there's an overflow
const int obits = inIgnore ? 0 : va_arg(ap, int);
int obits = inIgnore ? 0 : va_arg(ap, int);
VlWide<VL_WQ_WORDS_E> qowp;
VL_SET_WQ(qowp, 0ULL);
WDataOutP owp = qowp;
@@ -1390,7 +1390,26 @@ IData _vl_vsscanf(FILE* fp, // If a fscanf
VL_SET_WQ(owp, u.ld);
break;
}
case 't': // FALLTHRU // Time
case 't': { // Time
_vl_vsss_skipspace(fp, floc, fromp, fstr);
_vl_vsss_read_str(fp, floc, fromp, fstr, t_tmp, "+-.0123456789eE");
if (!t_tmp[0]) goto done;
union {
double r;
int64_t ld;
} u;
// Get pointer argument first, as proceeds the timeunit value
if (obits != 64) goto done;
QData* const realp = va_arg(ap, QData*);
const int timeunit = va_arg(ap, int);
const int userUnits
= Verilated::threadContextp()->impp()->timeFormatUnits(); // 0..-15
const int shift = -userUnits + timeunit; // 0..-15
u.r = std::strtod(t_tmp, nullptr) * vl_time_multiplier(-shift);
*realp = VL_CLEAN_QQ(obits, obits, u.ld);
obits = 0; // Already loaded the value, don't read arg
break;
}
case '#': { // Unsigned decimal
_vl_vsss_skipspace(fp, floc, fromp, fstr);
_vl_vsss_read_str(fp, floc, fromp, fstr, t_tmp, "0123456789+-xXzZ?_");