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iverilog/tgt-vvp
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Lars-Peter Clausen 5311c0cd38 vvp: Add opcode for unary real minus 
Currently the vvp target emits unary real minus as `0.0 - value`.
This is not the same operation for all real values. It loses the
negative zero result for `-(+0.0)` and does not reliably flip the sign
bit for NaN values whose bits are visible through `$realtobits`.

Add `%neg/wr` and use it for unary real minus. This performs a direct
negation of the real stack value, so zero, NaN and infinity all use the
same operation as unary minus instead of a binary subtraction from zero.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
 		2026-06-22 07:43:02 -07:00
..
COPYING.lesser Move GNU lesser to tgt-vvp since that is the only place where LGPL code is located 2020-11-14 19:03:27 -08:00
Makefile.in Fix possible parallel build race with compile and dep directory 2026-03-27 18:38:34 -07:00
cppcheck.sup Cleanup cppcheck 2026-02-24 23:53:57 -08:00
draw_class.c Support multi-dimensional packed vectors as class properties 2026-06-09 21:33:18 -07:00
draw_delay.c Some cppcheck cleanup 2025-10-12 17:37:50 -07:00
draw_enum.c updated FSF-address 2012-08-29 10:12:10 -07:00
draw_mux.c tgt-vvp: Avoid interleaving array ports into mux output 2026-06-21 11:44:15 -07:00
draw_net_input.c Some cppcheck cleanup 2025-10-12 17:37:50 -07:00
draw_substitute.c tgt-vvp: Avoid interleaving array ports into mux output 2026-06-21 11:44:15 -07:00
draw_switch.c Increase the thread flag count from 256 to 512 2020-05-31 12:39:54 -07:00
draw_ufunc.c Functions that return strings pass the return value on the stack. 2016-03-01 15:38:28 -08:00
draw_vpi.c tgt-vvp: Handle signedness when passing struct member to system function 2022-05-24 11:32:19 +02:00
eval_condit.c tgt-vvp: Short circuit logical operators 2021-12-30 18:56:39 +01:00
eval_expr.c Some cppcheck cleanup 2025-10-12 17:37:50 -07:00
eval_object.c Some cppcheck cleanup 2025-10-12 17:37:50 -07:00
eval_real.c vvp: Add opcode for unary real minus 2026-06-22 07:43:02 -07:00
eval_string.c Add support for pop_back/front without () 2020-07-25 22:16:54 -07:00
eval_vec4.c tgt-vvp: Remove implicit casts between vector and real 2025-01-02 17:40:29 -08:00
modpath.c Fix GitHub issue #315 - support modpath delays on multiply-driven nets. 2020-04-02 10:56:03 +01:00
stmt_assign.c Support multi-dimensional packed vectors as class properties 2026-06-09 21:33:18 -07:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c Update program copyright to 2026 2026-01-13 02:04:37 -08:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp_config.h.in Remove "using namespace std" from vvp header files and fix the fallout. 2021-11-04 17:02:07 +00:00
vvp_priv.h Some cppcheck cleanup 2025-10-12 17:37:50 -07:00
vvp_proc_loops.c tgt-vvp: Replace `%pushi ...; %op` with `%opi` 2024-08-31 13:46:30 +02:00
vvp_process.c Update copyright year in vvp_process.c 2026-05-15 07:47:24 -07:00
vvp_scope.c Fix/update latest cppcheck issues 2026-05-10 14:47:40 -07:00