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 30616-7aa4fb0184) Lines: 1468 1530 95.9 % Date: 2026-01-18 09:22:29 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296168
RgX_gtofp_bit	7029065
RgX_normalize1	35731
X2XP1	5989524
ZX_Uspensky	1313707
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48563
ZX_rescale2prim	2233414
ZX_sturm	6395
ZX_sturm_i	122971
ZX_sturm_irred	116576
ZX_sturmpart	1128211
ZX_to_ZiX	16447039
ZiX_sqr	99011079
_gen_nored	11196956
_gen_one	14469656
_gen_zero	326008
_intervalcmp	0
_mp_add	24658674
_mp_cmul	34756524
_mp_mul	4374460
_mp_sqr	6298118
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	536976
abs_update	8003152
abs_update_r	778541
all_roots	535873
append_clone	1613501
bkeval_single_power	5234825
check_ab	1178838
checkbound	2354806
checkvalidpol	266890
clean_roots	535924
cleanroots	231763
cmp_complex_appr	2237243
conformal_basecase	1403471
conformal_mapping	467785
conformal_pol	1403591
dblexp	6547219
dbllog2	301983270
dft	502234
dual_modulus	1012183
eval_rel_pol	13134141
fft	14154744
fft2	7462
findpower	40946055
fix_roots	536978
fix_roots1	398353
fujiwara_bound	2271001
fujiwara_bound_real	1406682
graeffe	49490015
homothetie	1609609
homothetie2n	9954425
homothetie_gauss	36487645
ind_maxlog2	902424
initdft	996077
isexactpol	239753
isexactscalar	931714
isreal	961630
isvalidcoeff	1228143
logmax_modulus	4449507
logmin_modulus	1614345
logmodulus	606551
logpre_modulus	606552
logradius	493839
lower_bound	40945601
mydbllog2i	226346629
mydbllog2r	56169888
mydbllogr	9544210
mygprec	63740644
mygprec_absolute	4337398
mygprec_special	536982
mygprecrc	215118047
mygprecrc_special	2178257
myshiftic	135762182
myshiftrc	35495258
newton_polygon	5505278
optimize_split	493845
parameters	493843
pol_to_gaussint	17583743
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166692
quicktofp	6976678
realroots	50627
refine_F	502231
refine_H	2459935
root_error	1911601
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288158
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494205
split_0_1	468150
split_0_2	468151
split_1	467787
split_2	493841
split_complete	1525386
split_fromU	493844
split_pols	166688
splitcauchy	166698
splitpoleval	5234550
tocomplex	1213158
update_radius	493844
usp	1125886

Generated by: LCOV version 1.16