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 30719-2b7f142d49) Lines: 1880 2002 93.9 % Date: 2026-02-28 09:24:01 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	112
divRq	301
mulqq	1127
addRq	1302
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	189696
fix_rfrac	206780
Q_to_Fp	226838
div_rfrac_pol	262365
mul_ser_scal	321174
div_intmod_same	341438
gconj	390135
add_ser_scal	414450
sqr_polmod	419385
div_ser	774266
sub_intmod_same	1021769
div_rfrac	1187237
divpT	1204910
div_ser_scal	1343391
gdivgunextu	1583803
Qdivis	1592287
divRc	2286171
mul_polmod	2674945
mul_intmod_same	2788739
mulcxmI	2985920
add_rfrac	3017228
gsubsg	3235141
mul_polmod_scal	3238992
add_intmod_same	3338765
ser_add	3592956
addQp	4762942
mulTp	4985899
mulcxpowIs	5563771
pol2ser	5638655
quad_polmod_mul	5860209
div_T_scal	7125907
_serprec	7185114
mul_self_scal	7646407
mul_rfrac	7910299
mul_polmod_same	8529774
add_rfrac_scal	8812213
div_scal_pol	9258220
div_scal_T	9266463
rfrac_denom_mul_scal	9959029
mul_rfrac_scal	10454093
mulcIR	11644944
gdivgs	13001684
divpp	13212772
addsub_polmod_scal	13456529
addsub_frac_i	14120632
setfrac	14999392
mulcxI	15630134
mulpp	17505416
addsub_pp	19974552
divcR	23352623
mkpadic_mod	24594323
conj_i	31492017
ginv	36599236
mulrfrac	37737766
addsub_frac	40598636
add_scal	42826844
gred_rfrac2	44823170
Leading_is_neg	57790181
gred_rfrac_simple	57794270
gdivgu	60480875
utoi_sign	64652702
Qdivii	141942950
gmul2n	143713344
Qdiviu	148819099
mul_scal	154344507
transtype	154397971
divrunextu	213736499
gmulsg	240998338
gaddsg	270740507
mulcc	279003308
gmulug	283683119
addRc	307880279
mulRc	354493198
gdiv	439094937
gsqr	1210027170
gsub	2890532632
gadd	6180485374
gmul	8729460546

Generated by: LCOV version 1.16