Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - gen1.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30571-c0dfe82732) Lines: 1865 1987 93.9 % Date: 2025-12-09 09:22:05 Functions: 105 105 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
addTp	7
mulqf	28
kro_quad	35
Zp_nosquare_m1	42
divfq	42
divqf	63
sqrq	70
addqf	77
conjvec	84
is_ext_qfr	98
warn_coercion	105
divRq	301
mulqq	1127
addRq	1288
mulRq	2324
divTp	3674
addsub_polmod	7203
ser_normalize	7658
quad_polmod_conj	18403
quad_polmod_norm	18403
div_scal_ser	19096
div_rfrac_scal	32139
div_polmod_same	37016
div_scal_rfrac	37767
sqr_ser_part	113207
mul_gen_rfrac	161432
inv_polmod	189690
fix_rfrac	207739
Q_to_Fp	226838
div_rfrac_pol	262344
mul_ser_scal	321223
div_intmod_same	341924
gconj	390135
add_ser_scal	414401
sqr_polmod	419385
div_ser	774252
sub_intmod_same	1027929
div_rfrac	1187237
divpT	1204917
div_ser_scal	1343391
gdivgunextu	1583803
Qdivis	1592357
divRc	2286774
mul_intmod_same	2629279
mul_polmod	2674945
mulcxmI	2985871
add_rfrac	3018271
gsubsg	3234913
mul_polmod_scal	3239013
add_intmod_same	3344842
ser_add	3592942
addQp	4762952
mulTp	4984930
mulcxpowIs	5563138
fill_ser	5715854
init_ser	5728306
quad_polmod_mul	5860209
div_T_scal	7133764
_serprec	7185086
mul_self_scal	7651071
mul_rfrac	7910299
mul_polmod_same	8529774
add_rfrac_scal	8811954
div_scal_pol	9257079
div_scal_T	9265322
rfrac_denom_mul_scal	9959393
mul_rfrac_scal	10455087
mulcIR	11648900
gdivgs	13002713
divpp	13212762
addsub_polmod_scal	13456508
addsub_frac_i	14121512
setfrac	15000456
mulcxI	15630606
mulpp	17502940
addsub_pp	19972161
divcR	23356857
mkpadic_mod	24593519
conj_i	31495258
ginv	36599752
mulrfrac	37790669
addsub_frac	40600146
add_scal	42811347
gred_rfrac2	44825781
Leading_is_neg	57793121
gred_rfrac_simple	57797210
gdivgu	60367417
utoi_sign	64543431
Qdivii	141943506
gmul2n	143736505
Qdiviu	148707453
mul_scal	154341497
transtype	154403389
divrunextu	213365093
gmulsg	236648721
gaddsg	270740108
mulcc	279039543
gmulug	282637822
addRc	307913646
mulRc	354519831
gdiv	439086618
gsqr	1184071280
gsub	2887146504
gadd	6140546778
gmul	8687197070

Generated by: LCOV version 1.16