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 30786-ffec283a2b) Lines: 1467 1530 95.9 % Date: 2026-04-07 09:25:56 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296309
RgX_gtofp_bit	7048029
RgX_normalize1	35705
X2XP1	5990324
ZX_Uspensky	1313870
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	2233701
ZX_sturm	6395
ZX_sturm_i	123068
ZX_sturm_irred	116673
ZX_sturmpart	1128277
ZX_to_ZiX	16490651
ZiX_sqr	99212318
_gen_nored	11199562
_gen_one	14469367
_gen_zero	325993
_intervalcmp	0
_mp_add	24660395
_mp_cmul	34759673
_mp_mul	4374517
_mp_sqr	6298152
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537470
abs_update	8021070
abs_update_r	780123
all_roots	536370
append_clone	1616166
bkeval_single_power	5234488
check_ab	1178904
checkbound	2354936
checkvalidpol	267214
clean_roots	536405
cleanroots	231763
cmp_complex_appr	2241479
conformal_basecase	1406449
conformal_mapping	468779
conformal_pol	1406569
dblexp	6562445
dbllog2	303972853
dft	503319
dual_modulus	1014482
eval_rel_pol	13168358
fft	14194115
fft2	7462
findpower	41024516
fix_roots	537466
fix_roots1	398789
fujiwara_bound	2271982
fujiwara_bound_real	1406950
graeffe	49601224
homothetie	1613560
homothetie2n	9978843
homothetie_gauss	36560659
ind_maxlog2	904362
initdft	998245
isexactpol	240103
isexactscalar	934017
isreal	963689
isvalidcoeff	1230445
logmax_modulus	4458567
logmin_modulus	1617668
logmodulus	608220
logpre_modulus	608211
logradius	494923
lower_bound	41024037
mydbllog2i	226832566
mydbllog2r	57610425
mydbllogr	9565740
mygprec	63861238
mygprec_absolute	4344066
mygprec_special	537474
mygprecrc	215556252
mygprecrc_special	2181405
myshiftic	136063309
myshiftrc	35576035
newton_polygon	5520668
optimize_split	494927
parameters	494924
pol_to_gaussint	17626840
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166703
quicktofp	6981316
realroots	50627
refine_F	503315
refine_H	2464574
root_error	1914412
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297378
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495299
split_0_1	469145
split_0_2	469145
split_1	468778
split_2	494926
split_complete	1528064
split_fromU	494926
split_pols	166697
splitcauchy	166706
splitpoleval	5234845
tocomplex	1215854
update_radius	494925
usp	1126044

Generated by: LCOV version 1.16