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Support with %g.

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This commit is contained in:
Wilson Snyder 2011-11-20 01:01:02 -05:00
parent 5df3bbe188
commit 9ab3bcdde3
3 changed files with 18 additions and 3 deletions
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2
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@ -12,6 +12,8 @@ indicates the contributor was also the author of the fix; Thanks!
**** Support constants in sensitivity lists, bug412. [Jeremy Bennett]
**** Support $sscanf with %g. [Holger Wächtler]
**** Indicate 'exiting due to errors' if errors, not warnings. [Ruben Diez]
**** Fix bad result with if-else-return optimization, bug420. [Alex Solomatnikov]

11
include/verilated.cpp
View File

@ -598,6 +598,17 @@ IData _vl_vsscanf(FILE* fp, // If a fscanf
VL_SET_WQ(owp,ld);
break;
}
case 'f':
case 'e':
case 'g': { // Real number
_vl_vsss_skipspace(fp,floc,fromp);
_vl_vsss_read(fp,floc,fromp, tmp, "+-.0123456789eE");
if (!tmp[0]) goto done;
union { double r; vlsint64_t ld; } u;
u.r = strtod(tmp, NULL);
VL_SET_WQ(owp,u.ld);
break;
}
case 't': // FALLTHRU // Time
case 'u': { // Unsigned decimal
_vl_vsss_skipspace(fp,floc,fromp);

8
test_regress/t/t_sys_file_basic.v
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@ -13,6 +13,7 @@ module t;
reg [8*8:1] letterq;
reg [16*8:1] letterw;
reg [16*8:1] letterz;
real r;
`ifdef TEST_VERBOSE
`define verbose 1'b1
@ -119,10 +120,11 @@ module t;
if (letterq != 64'h13) $stop;
if (letterw != 128'h55ce14f1a9c29e) $stop;
chars = $sscanf("d=-236123",
"d=%d", letterq);
chars = $sscanf("r=0.1 d=-236123",
"r=%g d=%d", r, letterq);
if (`verbose) $write("c=%0d d=%d\n", chars, letterq);
if (chars != 1) $stop;
if (chars != 2) $stop;
if (r != 0.1) $stop;
if (letterq != 64'hfffffffffffc65a5) $stop;
// $fscanf