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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31057-89c4d54ba6) Lines: 94.0 % 2028 1906 Test Date: 2026-07-25 17:02:42 Functions: 100.0 % 104 104 Legend: Lines:     hit not hit

Function Name	Hit count
Leading_is_neg	57792183
Q_to_Fp	226838
Qdivii	144887819
Qdivis	2587664
Qdiviu	152532129
Zp_nosquare_m1	42
_serprec	8514516
addQp	4763203
addRc	313306012
addRq	1596
addTp	7
add_intmod_same	3416164
add_rfrac	3017298
add_rfrac_scal	8812479
add_scal	43070639
add_ser_scal	425209
addqf	77
addsub_frac	41416248
addsub_frac_i	14584283
addsub_polmod	7203
addsub_polmod_scal	13604334
addsub_pp	19978757
base_change	154407967
conj_i	32594788
conjvec	84
divRc	3408005
divRq	301
divTp	3674
div_T_scal	7412618
div_intmod_same	341514
div_polmod_same	38087
div_rfrac	1187251
div_rfrac_pol	262365
div_rfrac_scal	32139
div_scal_T	9263698
div_scal_pol	9254006
div_scal_rfrac	37767
div_scal_ser	19292
div_ser	908987
div_ser_scal	1608941
divcR	24802015
divfq	42
divpT	1204910
divpp	13216944
divqf	63
divrunextu	216120234
fix_rfrac	207018
gadd	6605476302
gaddsg	270842485
gconj	390611
gdiv	464236849
gdivgs	29789223
gdivgu	61985200
gdivgunextu	1583943
ginv	38808325
gmul	9175522695
gmul2n	155011047
gmulsg	262200189
gmulug	283956448
gred_rfrac	44825263
gred_rfrac_simple	57797147
gsqr	1218332861
gsub	2937073900
gsubsg	3271592
inv_polmod	192253
is_ext_qfr	98
kro_quad	35
mkpadic_mod	24599342
mulRc	360941625
mulRq	2324
mulTp	4985951
mul_gen_rfrac	161432
mul_intmod_same	3138828
mul_polmod	2674945
mul_polmod_same	8646527
mul_polmod_scal	3288167
mul_rfrac	7910397
mul_rfrac_scal	10454352
mul_scal	155047931
mul_self_scal	8028167
mul_ser_scal	326494
mulcIR	11901792
mulcc	286497782
mulcxI	15681047
mulcxmI	3166662
mulcxpowIs	5749844
mulpp	17506470
mulqf	28
mulqq	1127
mulrfrac	38175730
pol2ser	6631815
quad_polmod_conj	18725
quad_polmod_mul	5861735
quad_polmod_norm	18725
rfrac_denom_mul_scal	9959295
ser_add	4257657
ser_normalize	7658
setfrac	15555718
sqr_polmod	426147
sqr_ser_part	114411
sqrq	70
sub_intmod_same	1031401
utoi_sign	65609882
warn_coercion	112

Generated by: LCOV version 2.0-1