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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30622-caa25a75db) Lines: 1467 1530 95.9 % Date: 2026-01-22 09:18:00 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5254
ZX_sturm	6379
fft2	7462
roots	8018
ZX_deg1root	14229
_sqrtnr	21223
polrootsbound_i	25774
polrootsbound	25781
RgX_normalize1	34382
ZX_realroots_irred	45109
realroots	50627
ZX_sturm_irred	107655
ZX_sturm_i	114034
split_pols	159413
splitcauchy	159414
polsolve	159416
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	265541
QX_complex_roots	272842
_gen_zero	303455
fix_roots1	385385
split_1	449087
conformal_mapping	449089
split_0_1	449454
split_0_2	449454
logradius	473802
optimize_split	473802
parameters	473802
split_2	473802
split_fromU	473802
update_radius	473802
split_0	474167
dft	481796
refine_F	481797
all_roots	512550
clean_roots	512597
a_posteriori_errors	513653
fix_roots	513653
mygprec_special	513656
logmodulus	579298
logpre_modulus	579299
abs_update_r	753868
ind_maxlog2	867544
isreal	922889
isexactscalar	931714
initdft	955598
dual_modulus	970676
usp	1095397
ZX_sturmpart	1105875
tocomplex	1135151
check_ab	1156502
isvalidcoeff	1215544
ZX_Uspensky	1281083
conformal_basecase	1347385
conformal_pol	1347504
fujiwara_bound_real	1365253
split_complete	1461984
homothetie	1541158
append_clone	1542069
logmin_modulus	1543917
root_error	1817619
mygprecrc_special	2083497
cmp_complex_appr	2114006
fujiwara_bound	2188657
ZX_rescale2prim	2195207
checkbound	2310146
refine_H	2365886
mygprec_absolute	4085363
scalepol	4115931
logmax_modulus	4257760
_mp_mul	4305337
bkeval_single_power	5016186
splitpoleval	5016194
newton_polygon	5255914
X2XP1	5882183
_mp_sqr	6139397
dblexp	6266179
RgX_gtofp_bit	6706057
quicktofp	6711105
abs_update	7589700
mydbllogr	9065263
homothetie2n	9513652
_gen_nored	10785265
eval_rel_pol	12548993
fft	13422554
_gen_one	13908117
ZX_to_ZiX	15256148
pol_to_gaussint	16806742
_mp_add	24211540
myshiftrc	33802732
_mp_cmul	33929710
homothetie_gauss	34921685
findpower	39179885
lower_bound	39179901
graeffe	47366046
mydbllog2r	54270538
mygprec	61071836
ZiX_sqr	94733827
myshiftic	129443337
mygprecrc	203725883
mydbllog2i	215169087
dbllog2	287307101

Generated by: LCOV version 1.16