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 30766-abc2a9856c) Lines: 1467 1530 95.9 % Date: 2026-03-27 09:27:04 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296306
RgX_gtofp_bit	7048117
RgX_normalize1	35702
X2XP1	5990512
ZX_Uspensky	1313835
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48573
ZX_rescale2prim	2233763
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128241
ZX_to_ZiX	16492358
ZiX_sqr	99232162
_gen_nored	11209581
_gen_one	14475820
_gen_zero	326014
_intervalcmp	0
_mp_add	24666989
_mp_cmul	34784473
_mp_mul	4374718
_mp_sqr	6298703
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537459
abs_update	8021264
abs_update_r	780147
all_roots	536366
append_clone	1616157
bkeval_single_power	5236276
check_ab	1178868
checkbound	2354864
checkvalidpol	267211
clean_roots	536411
cleanroots	231763
cmp_complex_appr	2241483
conformal_basecase	1406453
conformal_mapping	468779
conformal_pol	1406573
dblexp	6562584
dbllog2	304075208
dft	503325
dual_modulus	1014489
eval_rel_pol	13168618
fft	14194709
fft2	7462
findpower	41028615
fix_roots	537469
fix_roots1	398790
fujiwara_bound	2271948
fujiwara_bound_real	1406916
graeffe	49609419
homothetie	1613574
homothetie2n	9979075
homothetie_gauss	36565519
ind_maxlog2	904353
initdft	998252
isexactpol	240103
isexactscalar	934017
isreal	963711
isvalidcoeff	1230434
logmax_modulus	4458605
logmin_modulus	1617676
logmodulus	608225
logpre_modulus	608219
logradius	494928
lower_bound	41029586
mydbllog2i	226897181
mydbllog2r	57613148
mydbllogr	9565675
mygprec	63865296
mygprec_absolute	4344185
mygprec_special	537472
mygprecrc	215575034
mygprecrc_special	2181409
myshiftic	136135167
myshiftrc	35577668
newton_polygon	5520711
optimize_split	494932
parameters	494930
pol_to_gaussint	17627228
polgraeffe	14
polmod_to_embed	84
polrootsbound	27101
polrootsbound_i	27094
polsolve	166703
quicktofp	6981276
realroots	50627
refine_F	503320
refine_H	2464600
root_error	1914411
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297408
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495301
split_0_1	469149
split_0_2	469149
split_1	468780
split_2	494931
split_complete	1528067
split_fromU	494932
split_pols	166703
splitcauchy	166707
splitpoleval	5236135
tocomplex	1215875
update_radius	494930
usp	1126028

Generated by: LCOV version 1.16