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Internals: Cleanup some RANDOM functions.

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This commit is contained in:
Wilson Snyder 2021-02-24 22:13:24 -05:00
parent 30c34e4975
commit 206bd416aa
2 changed files with 13 additions and 18 deletions
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26
include/verilated.cpp
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@ -321,19 +321,16 @@ vluint64_t vl_rand64() VL_MT_SAFE {
return result;
}
#ifndef VL_NO_LEGACY
// VL_RANDOM_W currently unused as $random always 32 bits, left for backwards compatibility
// LCOV_EXCL_START
WDataOutP VL_RANDOM_W(int obits, WDataOutP outwp) VL_MT_SAFE {
for (int i = 0; i < VL_WORDS_I(obits); ++i) {
if (i < (VL_WORDS_I(obits) - 1)) {
outwp[i] = vl_rand64();
} else {
outwp[i] = vl_rand64() & VL_MASK_E(obits);
}
}
for (int i = 0; i < VL_WORDS_I(obits) - 1; ++i) outwp[i] = vl_rand64();
outwp[VL_WORDS_I(obits) - 1] = vl_rand64() & VL_MASK_E(obits);
return outwp;
}
// LCOV_EXCL_STOP
#endif
IData VL_RANDOM_SEEDED_II(int obits, IData seed) VL_MT_SAFE {
Verilated::randSeed(static_cast<int>(seed));
@ -359,13 +356,8 @@ QData VL_RAND_RESET_Q(int obits) VL_MT_SAFE {
return data;
}
WDataOutP VL_RAND_RESET_W(int obits, WDataOutP outwp) VL_MT_SAFE {
for (int i = 0; i < VL_WORDS_I(obits); ++i) {
if (i < (VL_WORDS_I(obits) - 1)) {
outwp[i] = VL_RAND_RESET_I(32);
} else {
outwp[i] = VL_RAND_RESET_I(32) & VL_MASK_E(obits);
}
}
for (int i = 0; i < VL_WORDS_I(obits) - 1; ++i) outwp[i] = VL_RAND_RESET_I(32);
outwp[VL_WORDS_I(obits) - 1] = VL_RAND_RESET_I(32) & VL_MASK_E(obits);
return outwp;
}
@ -2114,7 +2106,7 @@ void VL_WRITEMEM_N(bool hex, // Hex format, else binary
// Helper function for conversion of timescale strings
// Converts (1|10|100)(s|ms|us|ns|ps|fs) to power of then
int VL_TIME_STR_CONVERT(const char* strp) {
int VL_TIME_STR_CONVERT(const char* strp) VL_PURE {
int scale = 0;
if (!strp) return 0;
if (*strp++ != '1') return 0;
@ -2135,14 +2127,14 @@ int VL_TIME_STR_CONVERT(const char* strp) {
if (*strp) return 0;
return scale;
}
static const char* vl_time_str(int scale) {
static const char* vl_time_str(int scale) VL_PURE {
static const char* const names[]
= {"100s", "10s", "1s", "100ms", "10ms", "1ms", "100us", "10us", "1us",
"100ns", "10ns", "1ns", "100ps", "10ps", "1ps", "100fs", "10fs", "1fs"};
if (VL_UNLIKELY(scale > 2 || scale < -15)) scale = 0;
return names[2 - scale];
}
double vl_time_multiplier(int scale) {
double vl_time_multiplier(int scale) VL_PURE {
// Return timescale multipler -18 to +18
// For speed, this does not check for illegal values
if (scale < 0) {

5
include/verilated.h
View File

@ -640,7 +640,9 @@ extern void VL_DBG_MSGF(const char* formatp, ...) VL_ATTR_PRINTF(1) VL_MT_SAFE;
extern vluint64_t vl_rand64() VL_MT_SAFE;
inline IData VL_RANDOM_I(int obits) VL_MT_SAFE { return vl_rand64() & VL_MASK_I(obits); }
inline QData VL_RANDOM_Q(int obits) VL_MT_SAFE { return vl_rand64() & VL_MASK_Q(obits); }
#ifndef VL_NO_LEGACY
extern WDataOutP VL_RANDOM_W(int obits, WDataOutP outwp); ///< Randomize a signal
#endif
extern IData VL_RANDOM_SEEDED_II(int obits, IData seed) VL_MT_SAFE;
inline IData VL_URANDOM_RANGE_I(IData hi, IData lo) {
vluint64_t rnd = vl_rand64();
@ -860,8 +862,9 @@ inline vluint64_t vl_time_stamp64() { return static_cast<vluint64_t>(sc_time_sta
// Can't use multiply in Q flavor, as might lose precision
#define VL_TIME_UNITED_Q(scale) (VL_TIME_Q() / static_cast<QData>(scale))
#define VL_TIME_UNITED_D(scale) (VL_TIME_D() / static_cast<double>(scale))
/// Time imported from units to time precision
double vl_time_multiplier(int scale);
double vl_time_multiplier(int scale) VL_PURE;
/// Evaluate expression if debug enabled
#ifdef VL_DEBUG