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 30775-9d8a55740a) Lines: 1467 1530 95.9 % Date: 2026-04-05 09:26:48 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296307
RgX_gtofp_bit	7048049
RgX_normalize1	35705
X2XP1	5991017
ZX_Uspensky	1313895
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48576
ZX_rescale2prim	2234001
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128296
ZX_to_ZiX	16487253
ZiX_sqr	99214686
_gen_nored	11202487
_gen_one	14472069
_gen_zero	326005
_intervalcmp	0
_mp_add	24662788
_mp_cmul	34766257
_mp_mul	4374492
_mp_sqr	6298400
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537473
abs_update	8020535
abs_update_r	780137
all_roots	536365
append_clone	1616169
bkeval_single_power	5235510
check_ab	1178923
checkbound	2354975
checkvalidpol	267214
clean_roots	536411
cleanroots	231763
cmp_complex_appr	2241490
conformal_basecase	1406436
conformal_mapping	468773
conformal_pol	1406556
dblexp	6562429
dbllog2	303977660
dft	503317
dual_modulus	1014474
eval_rel_pol	13168212
fft	14194059
fft2	7462
findpower	41027185
fix_roots	537465
fix_roots1	398788
fujiwara_bound	2272013
fujiwara_bound_real	1406975
graeffe	49596975
homothetie	1613552
homothetie2n	9978880
homothetie_gauss	36561304
ind_maxlog2	904339
initdft	998243
isexactpol	240103
isexactscalar	934017
isreal	963693
isvalidcoeff	1230445
logmax_modulus	4458528
logmin_modulus	1617662
logmodulus	608222
logpre_modulus	608223
logradius	494920
lower_bound	41026842
mydbllog2i	226840330
mydbllog2r	57610858
mydbllogr	9565143
mygprec	63860169
mygprec_absolute	4344153
mygprec_special	537473
mygprecrc	215545629
mygprecrc_special	2181418
myshiftic	136069368
myshiftrc	35576449
newton_polygon	5520757
optimize_split	494924
parameters	494925
pol_to_gaussint	17626638
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166709
quicktofp	6981449
realroots	50627
refine_F	503312
refine_H	2464535
root_error	1914398
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297313
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495296
split_0_1	469138
split_0_2	469138
split_1	468771
split_2	494921
split_complete	1528059
split_fromU	494922
split_pols	166710
splitcauchy	166716
splitpoleval	5235347
tocomplex	1215873
update_radius	494925
usp	1126119

Generated by: LCOV version 1.16