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 30735-65f72320ad) Lines: 1881 2002 94.0 % Date: 2026-03-09 09:24:55 Functions: 104 104 100.0 % 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	126
divRq	301
mulqq	1127
addRq	1302
mulRq	2387
divTp	3674
addsub_polmod	7210
ser_normalize	7658
quad_polmod_conj	18403
quad_polmod_norm	18403
div_scal_ser	19096
div_rfrac_scal	32435
div_polmod_same	37016
sqr_ser_part	113207
mul_gen_rfrac	161376
inv_polmod	189774
fix_rfrac	206780
Q_to_Fp	226838
div_rfrac_pol	260657
mul_ser_scal	321174
div_intmod_same	341557
gconj	390135
add_ser_scal	414478
sqr_polmod	419392
div_ser	774266
sub_intmod_same	1017828
div_scal_rfrac	1052280
div_rfrac	1187496
divpT	1204910
div_ser_scal	1343391
gdivgunextu	1583803
Qdivis	1592572
divRc	2286132
mul_polmod	2674945
mul_intmod_same	2818706
mulcxmI	2985927
add_rfrac	3017228
mul_polmod_scal	3219551
gsubsg	3235114
add_intmod_same	3341076
ser_add	3592949
addQp	4762993
mulTp	4985895
mulcxpowIs	5564118
pol2ser	5638655
quad_polmod_mul	5860237
div_T_scal	7092833
_serprec	7185100
mul_self_scal	7646258
mul_rfrac	7910194
mul_polmod_same	8532791
add_rfrac_scal	8823769
rfrac_denom_mul_scal	9851840
mul_rfrac_scal	10435434
mulcIR	11645253
gdivgs	12993107
divpp	13212632
addsub_polmod_scal	13457862
addsub_frac_i	14120023
div_scal_pol	14531927
setfrac	14998397
div_scal_T	15557229
mulcxI	15636168
mulpp	17505562
addsub_pp	19974770
divcR	23355932
mkpadic_mod	24594765
add_scal	29391898
conj_i	31497396
ginv	36580055
mulrfrac	37740968
gred_rfrac2	39473628
addsub_frac	40596488
Leading_is_neg	57627946
gred_rfrac_simple	57631048
gdivgu	60481452
utoi_sign	64607955
Qdivii	142883594
gmul2n	143589253
Qdiviu	149755198
transtype	154216025
mul_scal	197771376
divrunextu	213887168
gmulsg	240967244
gaddsg	270746036
mulcc	279018848
gmulug	283683119
addRc	307885866
mulRc	354668555
gdiv	439919299
gsqr	1337513324
gsub	2890333038
gadd	6188109927
gmul	8905007510

Generated by: LCOV version 1.16