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 30793-1ceee7ca5f) Lines: 1468 1530 95.9 % Date: 2026-04-10 09:27:03 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	5439
ZX_sturm	6395
fft2	7462
roots	8368
ZX_deg1root	15203
_sqrtnr	22596
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48574
realroots	50627
ZX_sturm_irred	116678
ZX_sturm_i	123073
split_pols	166703
polsolve	166706
splitcauchy	166711
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296312
_gen_zero	326027
fix_roots1	398788
split_1	468773
conformal_mapping	468776
split_0_1	469145
split_0_2	469145
logradius	494924
optimize_split	494926
parameters	494926
split_2	494926
split_fromU	494926
update_radius	494927
split_0	495297
refine_F	503315
dft	503320
all_roots	536372
clean_roots	536413
a_posteriori_errors	537466
fix_roots	537466
mygprec_special	537475
logmodulus	608219
logpre_modulus	608220
abs_update_r	780152
ind_maxlog2	904348
isexactscalar	934017
isreal	963697
initdft	998246
dual_modulus	1014478
usp	1126109
ZX_sturmpart	1128315
check_ab	1178942
tocomplex	1215885
isvalidcoeff	1230445
ZX_Uspensky	1313920
conformal_basecase	1406434
conformal_pol	1406553
fujiwara_bound_real	1406989
split_complete	1528065
homothetie	1613570
append_clone	1616170
logmin_modulus	1617676
root_error	1914411
mygprecrc_special	2181425
ZX_rescale2prim	2233803
cmp_complex_appr	2241471
fujiwara_bound	2272033
checkbound	2355014
refine_H	2464562
scalepol	4297318
mygprec_absolute	4344251
_mp_mul	4374546
logmax_modulus	4458574
splitpoleval	5235740
bkeval_single_power	5235805
newton_polygon	5520795
X2XP1	5990668
_mp_sqr	6298622
dblexp	6562502
quicktofp	6981491
RgX_gtofp_bit	7048117
abs_update	8020762
mydbllogr	9565067
homothetie2n	9979035
_gen_nored	11201554
eval_rel_pol	13168525
fft	14194250
_gen_one	14473761
ZX_to_ZiX	16488568
pol_to_gaussint	17627221
_mp_add	24661993
_mp_cmul	34765877
myshiftrc	35577568
homothetie_gauss	36565373
lower_bound	41029084
findpower	41029706
graeffe	49601446
mydbllog2r	57612945
mygprec	63862081
ZiX_sqr	99231480
myshiftic	136083446
mygprecrc	215563412
mydbllog2i	226869252
dbllog2	304007802

Generated by: LCOV version 1.16